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Non-lethal weapons, also called nonlethal weapons, less-lethal weapons, less-than-lethal weapons, non-deadly weapons, compliance weapons, or pain-inducing weapons are
weapon A weapon, arm or armament is any implement or device that can be used to deter, threaten, inflict physical damage, harm, or kill. Weapons are used to increase the efficacy and efficiency of activities such as hunting, crime, law enforcement, ...
s intended to be less likely to kill a living target than conventional weapons such as
knives A knife ( : knives; from Old Norse 'knife, dirk') is a tool or weapon with a cutting edge or blade, usually attached to a handle or hilt. One of the earliest tools used by humanity, knives appeared at least 2.5 million years ago, as evidence ...
and
firearms A firearm is any type of gun designed to be readily carried and used by an individual. The term is legally defined further in different countries (see Legal definitions). The first firearms originated in 10th-century China, when bamboo tubes ...
with live
ammunition Ammunition (informally ammo) is the material fired, scattered, dropped, or detonated from any weapon or weapon system. Ammunition is both expendable weapons (e.g., bombs, missiles, grenades, land mines) and the component parts of other weap ...
. It is often understood that unintended or incidental casualties are risked wherever force is applied, but non-lethal weapons try to minimise the risk of casualties (e.g. serious/permanent injuries or death) as much as possible. Non-lethal weapons are used in
policing The police are a constituted body of persons empowered by a state, with the aim to enforce the law, to ensure the safety, health and possessions of citizens, and to prevent crime and civil disorder. Their lawful powers include arrest and th ...
and
combat Combat ( French for ''fight'') is a purposeful violent conflict meant to physically harm or kill the opposition. Combat may be armed (using weapons) or unarmed ( not using weapons). Combat is sometimes resorted to as a method of self-defense, or ...
situations to limit the escalation of conflict where employment of lethal force is prohibited or undesirable, where rules of engagement require minimum casualties, or where policy restricts the use of conventional force. These weapons occasionally cause serious injuries or death; the term "less-lethal" has been preferred by some organizations as it describes the risks of death more accurately than the term "non-lethal", which some have argued is a
misnomer A misnomer is a name that is incorrectly or unsuitably applied. Misnomers often arise because something was named long before its correct nature was known, or because an earlier form of something has been replaced by a later form to which the name ...
. Non-lethal weapons may be used by conventional military in a range of missions across the force continuum. They may also be used by
military police Military police (MP) are law enforcement agencies connected with, or part of, the military of a state. In wartime operations, the military police may support the main fighting force with force protection, convoy security, screening, rear re ...
, by
United Nations The United Nations (UN) is an intergovernmental organization whose stated purposes are to maintain international peace and security, develop friendly relations among nations, achieve international cooperation, and be a centre for harmonizi ...
forces, and by
occupation forces Japan was military occupation, occupied and administered by the victorious Allies of World War II from the 1945 Japanese Instrument of Surrender, surrender of the Empire of Japan at the end of the war until the Treaty of San Francisco#Signatori ...
for
peacekeeping Peacekeeping comprises activities intended to create conditions that favour lasting peace. Research generally finds that peacekeeping reduces civilian and battlefield deaths, as well as reduces the risk of renewed warfare. Within the United N ...
and stability operations. Non-lethal weapons may also be used to channelize a battlefield, control the movement of civilian populations, or to limit civilian access to restricted areas (as they were utilized by the
USMC The United States Marine Corps (USMC), also referred to as the United States Marines, is the maritime land force service branch of the United States Armed Forces responsible for conducting expeditionary and amphibious operations through co ...
's
1st Marine Expeditionary Force The I Marine Expeditionary Force ("I" pronounced "One") is a Marine Air Ground Task Force (MAGTF) of the United States Marine Corps primarily composed of the 1st Marine Division, 3rd Marine Aircraft Wing, and 1st Marine Logistics Group. It is b ...
in
Somalia Somalia, , Osmanya script: 𐒈𐒝𐒑𐒛𐒐𐒘𐒕𐒖; ar, الصومال, aṣ-Ṣūmāl officially the Federal Republic of SomaliaThe ''Federal Republic of Somalia'' is the country's name per Article 1 of thProvisional Constituti ...
in 1995). Similar weapons, tactics, techniques and procedures are employed by police forces domestically in
riot control Riot control measures are used by law enforcement, military, paramilitary or security forces to control, disperse, and arrest people who are involved in a riot, unlawful demonstration or unlawful protest. If a riot is spontaneous and irrat ...
, prisoner control,
crowd control Crowd control is a public security practice in which large crowds are managed in order to prevent the outbreak of crowd crushes, affray, fights involving drunk and disorderly people or riots. Crowd crushes in particular can cause many hundred ...
, refugee control, and
self-defense Self-defense (self-defence primarily in Commonwealth English) is a countermeasure that involves defending the health and well-being of oneself from harm. The use of the right of self-defense as a legal justification for the use of force in ...
, where the terminology of "less-than-lethal" is often used.


History


Military

In the past, military and police faced with undesirable escalation of conflict had few acceptable options. Military personnel guarding embassies often found themselves restricted to carrying unloaded weapons. National guards or policing forces charged with quelling
riot A riot is a form of civil disorder commonly characterized by a group lashing out in a violent public disturbance against authority, property, or people. Riots typically involve destruction of property, public or private. The property targeted ...
s were able to use only batons or similar club-like weapons, or
bayonet A bayonet (from French ) is a knife, dagger, sword, or spike-shaped weapon designed to fit on the end of the muzzle of a rifle, musket or similar firearm, allowing it to be used as a spear-like weapon.Brayley, Martin, ''Bayonets: An Illustra ...
or
sword A sword is an edged, bladed weapon intended for manual cutting or thrusting. Its blade, longer than a knife or dagger, is attached to a hilt and can be straight or curved. A thrusting sword tends to have a straighter blade with a pointed tip ...
charges, or fire
live ammunition Ammunition (informally ammo) is the material fired, scattered, dropped, or detonated from any weapon or weapon system. Ammunition is both expendable weapons (e.g., bombs, missiles, grenades, land mines) and the component parts of other weapo ...
at crowds. In the late 1980s and early 1990s, the Non-lethality Policy Review Group at U.S. Global Strategy Council in Washington and other independent
think tank A think tank, or policy institute, is a research institute that performs research and advocacy concerning topics such as social policy, political strategy, economics, military, technology, and culture. Most think tanks are non-governmental o ...
s around the world called for a concerted effort to develop weapons that were more life-conserving, environmentally friendly, and fiscally responsible than weapons available at that time. The U.S. Congress and other governments agreed and began an organized development of non-lethal weapons to provide a range of options between talking and shooting. Recognizing the need to limit the escalation of force, research and development of a range of non-lethal weapons has since been undertaken internationally by governments and weapons manufacturers to fill the need for such weapons. Some non-lethal weapons may provide more effective riot control than firearms, truncheons or bayonets with less risk of loss of life or serious injury. Before the general availability of early military non-lethal weapons in the mid 1990s, war-fighters had few or no casualty-limiting options for the employment of scalable force and were continually at risk whenever lethal force was prohibited during sensitive missions. In 2001, the
United States Marine Corps The United States Marine Corps (USMC), also referred to as the United States Marines, is the maritime land force service branch of the United States Armed Forces responsible for conducting expeditionary and amphibious operations through c ...
revealed its development of a less-than-lethal energy weapon called the
Active Denial System The Active Denial System (ADS) is a non-lethal directed-energy weapon developed by the U.S. military, designed for area denial, perimeter security and crowd control. Informally, the weapon is also called the heat ray since it works by heating t ...
, a focused high frequency microwave device said to be capable of heating all living matter in the target area rapidly and continuously for the duration of the beam, causing transient intolerable
pain Pain is a distressing feeling often caused by intense or damaging stimuli. The International Association for the Study of Pain defines pain as "an unpleasant sensory and emotional experience associated with, or resembling that associated with, ...
but no lasting damage. The skin temperature of a person subjected to this weapon can jump to approximately in as little as 2 seconds depending on the skin's starting temperature. The system is nonlethal (the penetration of the beam into human skin is only a few millimeters). In 2004, author Jon Ronson cited an unclassified military report titled "Non-Lethal Weapons: Terms and References" 21 acoustic weapons were listed, in various stages of development, including the Infrasound ("Very low-frequency sound which can travel long distances and easily penetrate most buildings and vehicles ... biophysical effects are projected to be: nausea, loss of bowels, disorientation, vomiting, potential internal organ damage or death may occur. Superior to ultrasound...)", however no such effects had been achieved . In 2010, the ''Joint Non-Lethal Weapons Directorate Non-Lethal Weapons Reference Book'' was created. The weapons in this book are currently in development.


Police

Until the development of non-lethal weapons, police officers around the world had few if any non-lethal options for riot control. Common tactics used by police that were intended to be non-lethal or less lethal included a slowly advancing wall of men with batons, officers on horses trained to deal with policing situations, or a charge into a riot using the flats of sabers. Other reasonably successful approaches included shotguns with lower-powered cartridges, "salt shells", using bean-bag rounds and ricocheting shots off of the ground. In the mid-20th century, with the integration of fire-control systems into major cities, police found that high-pressure fire hoses could be effective in dispersing a crowd (the use of
water cannon A water cannon is a device that shoots a high-velocity stream of water. Typically, a water cannon can deliver a large volume of water, often over dozens of meters. They are used in firefighting, large vehicle washing, riot control, and mining. ...
s and
fire truck A fire engine (also known in some places as a fire truck or fire lorry) is a road vehicle (usually a truck) that functions as a firefighting apparatus. The primary purposes of a fire engine include transporting firefighters and water to an ...
s has remained an effective non-lethal tactic to disperse riots). Trained police dogs were also commonly used to scare and disperse rioters and apprehend individuals. In the 1980s the development of high-tensile plastics like
Kevlar Kevlar (para-aramid) is a strong, heat-resistant synthetic fiber, related to other aramids such as Nomex and Technora. Developed by Stephanie Kwolek at DuPont in 1965, the high-strength material was first used commercially in the early 1970s ...
and
Lexan Polycarbonates (PC) are a group of thermoplastic polymers containing carbonate groups in their chemical structures. Polycarbonates used in engineering are strong, tough materials, and some grades are optically transparent. They are easily work ...
revolutionized
personal armor Body armor, also known as body armour, personal armor or armour, or a suit or coat of armor, is protective clothing designed to absorb or deflect physical attacks. Historically used to protect military personnel, today it is also used by variou ...
and shields, and led to new tactics for riot squads and other special-purpose teams. Officers could now stand up against violent rioters throwing dangerous projectiles without having to resort to lethal methods to quickly disperse the danger. Coupled with the introduction of effective non-lethal chemical agents such as
tear gas Tear gas, also known as a lachrymator agent or lachrymator (), sometimes colloquially known as "mace" after the early commercial aerosol, is a chemical weapon that stimulates the nerves of the lacrimal gland in the eye to produce tears. In ad ...
and offensive-odor canisters, and non-lethal impact rounds such as rubber bullets and "bean bag"
flexible baton round Flexible may refer to: Science and technology * Power cord, a flexible electrical cable. ** Flexible cable, an Electrical cable as used on electrical appliances * Flexible electronics * Flexible response * Flexible-fuel vehicle * Flexible rake ...
s, riot tactics were modified to rely less on violent response to attacking rioters than on a return to the slowly advancing wall, with supporting officers firing non-lethal ordnance into the crowd to discourage advance. Police officers on patrol were traditionally armed with batons or pistols or both, and non-lethal methods of subduing an attacker centered on hand-fighting techniques such as
jujutsu Jujutsu ( ; ja, link=no, 柔術 , ), also known as jiu-jitsu and ju-jitsu, is a family of Japanese martial arts and a system of close combat (unarmed or with a minor weapon) that can be used in a defensive or offensive manner to kill or subdu ...
and baton use. In the 1980s and 1990s officers began deploying non-lethal personal sidearms such as
pepper spray Pepper spray, oleoresin capsicum spray, OC spray, capsaicin spray, or capsicum spray is a lachrymatory agent (a compound that irritates the eyes to cause a burning sensation, pain, and temporary blindness) used in policing, riot control, cro ...
s, and eventually
electroshock weapon An electroshock weapon is a less-lethal weapon that utilizes an electric shock to incapacitate a target by either temporarily disrupting voluntary muscle control and/or through pain compliance. There are several different types of electroshock w ...
s such as
taser A taser is an electroshock weapon used to incapacitate people, allowing them to be approached and handled in an unresisting and thus safe manner. It is sold by Axon (company), Axon, formerly TASER International. It fires two small barbed d ...
s, which were developed for use by police and also found a market in
self-defense Self-defense (self-defence primarily in Commonwealth English) is a countermeasure that involves defending the health and well-being of oneself from harm. The use of the right of self-defense as a legal justification for the use of force in ...
by private citizens. However, these weapons were developed for non-lethal resolution of one-on-one conflicts. During the 1990s and early 2000s (decade), interest in various other forms of less-than-lethal weapons for military and police use rose. Amongst other factors, the use of less-than-lethal weapons may be legal under international law and treaty in situations where weapons such as aerosol sprays or gases defined as chemical are not. Between the years of 1987–1990, after a three-year field study by the FBI's Firearms Training Unit; In 1990, the use of oleoresin capsicum was approved and used by the FBI, the first official law enforcement agency to do so. In the late 1990s and early 2000s (decade), police began to adopt a new pepper spray delivery system based on the equipment used in
paintball Paintball is a competitive team shooting sport in which players eliminate opponents from play by hitting them with spherical dye-filled gelatin capsules called paintballs that break upon impact. Paintballs are usually shot using low-energy ...
. A specialized paintball, called a "pepperball", is filled with liquid or powdered
capsaicin Capsaicin (8-methyl-''N''-vanillyl-6-nonenamide) ( or ) is an active component of chili peppers, which are plants belonging to the genus '' Capsicum''. It is a chemical irritant for mammals, including humans, and produces a sensation of burni ...
, the active ingredient in pepper spray, and is propelled by compressed gas using a paintball marker similar to those used for the sport but operating at a higher pressure. The impact of the capsule is immediately painful (a pepperball's shell is thicker than a standard paintball and is fired at a higher velocity), and it breaks open on impact, dispersing the capsaicin with similar effect to aerosol-delivered pepper spray. However, to be most effective, pepper spray must contact the eyes, nose, or mouth of the target; pepper spray on clothing or tougher skin has a much reduced effect. File:Soundweapon1.jpg, Long range acoustic device mounted on police vehicle, 2004 Republican National Convention, New York City File:Kravallpolis.jpg, Swedish police in riot gear, carrying an extended telescopic baton File:Taser-x26.jpg, A Taser X26 making an electrical arc between its two electrodes File:US Navy 020821-N-8252B-003 During training, a U.S. Navy Master At Arms is sprayed with Oleoresin Capsicum, a non-lethal form of pepper spray for use in riot control.jpg, Pepper spray training File:Exploded tear gas can on the fly.jpg, Exploded tear gas canister in the air


Effects

Non-lethal weapons have a design intent to provide an effect to reliably elicit a degree of incapacitation but without the typically lethal or permanent lasting effects of conventional weapons. This design intent has often made them a weapon of choice for use by law enforcement during civil protests, etc. Effect modalities vary by the technology being employed: kinetic projectiles function by blunt impact which actuate pain receptors to elicit a behavioral change, lights affect visual perception, acoustics affect hearing, etc. Notwithstanding their design intent, non-lethal weapons can still cause harm. This is particularly true with certain technologies that interact with appropriately vulnerable regions; an example is kinetic munitions on the head, neck, eyes, abdominal and urogenital regions of the body. As a result, some analysts describe "non-lethal" as a misnomer and recommend defining them as "less-lethal", whereas other sources identify "non-lethal" as representing a goal of minimization of producing fatalities or permanent injuries while not literally requiring minimization to a zero probability thereof. Because the design intent is to avoid/minimize permanence, the effects invariably have been transient in nature. Some effects may be momentary while others may persist for some finite period of time.


Mechanics

Non-lethal weapons are intended to minimize injury or death. While people are occasionally seriously injured or killed by these weapons, fatalities are relatively infrequent. Causes of death from non-lethal weapons are varied and occasionally uncertain. Misplaced or ricocheting shots, pre-existing medical conditions, inadequate user training, repetitive applications and intentional misuse have been implicated in different cases where death has occurred. As different parts of the body differ in vulnerability, and because people vary in weight and fitness, any weapon powerful enough to incapacitate may be capable of killing under certain circumstances. Thus, "non-lethal force" does have some risk of causing death: in this context, "non-lethal" means only "not ''intended'' to kill". Several groups maintain there is great room for improvement in non-lethal weapons and procedures for their use. Claims for the relative safety of such weapons are usually contingent on their being used "properly". For example, the
rubber bullet Rubber bullets (also called rubber baton rounds) are a type of baton round. Despite the name, rubber bullets typically have either a metal core with a rubber coating, or are a homogeneous admixture with rubber being a minority component. Altho ...
s developed during the 1960s were supposed to be fired at the ground and hit the target only after ricochet, and other non-lethal bullets are designed to be fired at the lower body; they can be lethal if fired directly at the head.


Ammunition

Non-lethal rounds are firearm rounds which are designed to incapacitate, but not kill, a target. The rounds rely on the transfer of kinetic energy and
blunt force trauma Blunt trauma, also known as blunt force trauma or non-penetrating trauma, is physical traumas, and particularly in the elderly who fall. It is contrasted with penetrating trauma which occurs when an object pierces the skin and enters a tissue ...
to accomplish this incapacitation.
Rubber bullet Rubber bullets (also called rubber baton rounds) are a type of baton round. Despite the name, rubber bullets typically have either a metal core with a rubber coating, or are a homogeneous admixture with rubber being a minority component. Altho ...
s, rubber buckshot, soft polymer rounds,
wax bullet A wax bullet is a non-lethal projectile made of wax material — often paraffin wax or some mixture of waxes and other substances that produce the desired consistency — that mimics the external ballistics but not the terminal effects of real bu ...
s,
plastic bullet A plastic bullet or plastic baton round (PBR) is a non-lethal projectile fired from a specialised gun. Although designed as a non-lethal weapon, they have caused a number of deaths when used incorrectly. Plastic bullets are generally used for ...
s,
beanbag round A bean bag round, also known by its trademarked name flexible baton round, is a type of baton round, fired from a shotgun, and used for less lethal apprehension of suspects. Description The bean bag round consists of a small fabric "pillow" f ...
s, sponge grenades, ring airfoil projectiles (both kinetic and tear gas projectiles) and rubber bullets with electroshock effect (e.g.
Taser A taser is an electroshock weapon used to incapacitate people, allowing them to be approached and handled in an unresisting and thus safe manner. It is sold by Axon (company), Axon, formerly TASER International. It fires two small barbed d ...
XREP rounds) are less lethal than conventional metal bullets, and are also propelled at lower speed by using less propellant. "Bean bag" type bullets are sometimes referred to as
flexible baton round Flexible may refer to: Science and technology * Power cord, a flexible electrical cable. ** Flexible cable, an Electrical cable as used on electrical appliances * Flexible electronics * Flexible response * Flexible-fuel vehicle * Flexible rake ...
s. More recently, high-velocity paintball guns are also used to launch less-lethal rounds, including the
FN 303 The FN 303 is a semi-automatic less-lethal riot gun designed and manufactured by Fabrique Nationale de Herstal. The FN 303 uses compressed air to fire projectiles from a 15-round drum magazine. It is designed to incapacitate the target through ...
launcher and PepperBall commercial products. There is also the Variable Velocity Weapon Concept, for which a propulsion energy source may not yet have been clearly established and/or finalized. In any case, all of these technologies apply the same basic mechanism, which is to launch a mass at the target that interacts kinetically. File:Fiocchi rubber buckshot.jpg, Fiocchi 12-gauge rubber buckshot: containing 15, 8.3 mm, .58 gram rubber pellets, with a muzzle velocity of 790 fps. File:Bean bag round close up.jpg, 12-gauge beanbag rounds and exposed bean bag round projectile File:Sam234am.PNG, U.S. M234 launcher ring airfoil projectile rounds Image:M234.png, Launcher, projectile, 64 mm, riot control, M234


Explosives

Hand grenade A grenade is an explosive weapon typically thrown by hand (also called hand grenade), but can also refer to a shell (explosive projectile) shot from the muzzle of a rifle (as a rifle grenade) or a grenade launcher. A modern hand grenade genera ...
s come in several less-lethal varieties, such as "flashbang" (stun) grenades, "sting" grenades with rubber shrapnel, and grenades designed to release chemical irritants (described below). In 1972, stun grenades were used to capture the hijacked
Sabena Flight 571 Sabena Flight 571 was a scheduled passenger flight from Brussels to Lod via Vienna operated by the Belgian national airline, Sabena. On 8 May 1972 a Boeing 707 passenger aircraft operating that service, captained by British pilot Reginald L ...
, allowing the Israeli forces headed by
Ehud Barak Ehud Barak ( he-a, אֵהוּד בָּרָק, Ehud_barak.ogg, link=yes, born Ehud Brog; 12 February 1942) is an Israeli general and politician who served as the tenth prime minister from 1999 to 2001. He was leader of the Labor Party until Jan ...
and including Benjamin Netanyahu to storm the plane and take it over within 10 minutes while capturing two terrorists and killing Ali Taha, the leader of the terrorist group and his aide, while rescuing all passengers (three were wounded, and one died of her injuries several days later). A stun grenade was apparently used by members of the IHH against the IDF soldiers during the
Gaza flotilla raid The Gaza flotilla raid was a military operation by Israel against six civilian ships of the " Gaza Freedom Flotilla" on 31 May 2010 in international waters in the Mediterranean Sea. Nine activists and no Israelis were killed on one ship dur ...
at the beginning of the IDF storming of the
Mavi Marmara MV ''Mavi Marmara'' is a Comoros-flagged passenger ship, which was formerly owned and operated by İDO Istanbul Fast Ferries Co. Inc. on the line Sarayburnu, Istanbul- Marmara Island- Avşa Island in the Sea of Marmara. Built at the Golden G ...
. In June 2010, in Kenya, a stun grenade was used to draw attention, and then a real grenade along with an explosive package were used, killing many people. In April, during the 2010 Kyrgyzstani uprising, police attempted to use stun grenades to stop a demonstration but the crowd overwhelmed the police. In March stun grenades were used by Belarusian police in
Minsk Minsk ( be, Мінск ; russian: Минск) is the capital and the largest city of Belarus, located on the Svislach and the now subterranean Niamiha rivers. As the capital, Minsk has a special administrative status in Belarus and is the adm ...
against demonstrators, and in September they were used by Greek police in Athens. In these latter two cases, the demonstrations were dispersed with no injuries. In February 2011, stun grenades were seen used by Egyptian police against rioters.


Gases and sprays


Water

Water cannon A water cannon is a device that shoots a high-velocity stream of water. Typically, a water cannon can deliver a large volume of water, often over dozens of meters. They are used in firefighting, large vehicle washing, riot control, and mining. ...
s are commonly used in crowd and riot control, for dispersal or to prevent movement on a particular position. These water cannons are intended to disperse crowds with little risk of harm, but the pressure can still cause eye injuries or even death. Water-filled rounds for small arms are in experimental stages. Electrified water cannons were in development but was abandoned.


Scent-based weapons

Malodorant A malodorant is a chemical compound whose extreme stench acts as a temporary incapacitant. It attacks the olfactory and/or trigeminal nerves of the person introduced to the chemical. These compounds are usually composed of at least two ingredien ...
s produce strong odours that cause people to leave the affected area. In 2008, the
Israeli Defence Forces The Israel Defense Forces (IDF; he, צְבָא הַהֲגָנָה לְיִשְׂרָאֵל , ), alternatively referred to by the Hebrew-language acronym (), is the national military of the State of Israel. It consists of three service branch ...
began using
Skunk Skunks are mammals in the family Mephitidae. They are known for their ability to spray a liquid with a strong, unpleasant scent from their anal glands. Different species of skunk vary in appearance from black-and-white to brown, cream or ginge ...
for crowd control. It is a form of mist sprayed from a water cannon, which leaves a terrible odor of rot or sewage on whatever it touches, and does not wash off easily.


Pepper spray

The active ingredient in
pepper spray Pepper spray, oleoresin capsicum spray, OC spray, capsaicin spray, or capsicum spray is a lachrymatory agent (a compound that irritates the eyes to cause a burning sensation, pain, and temporary blindness) used in policing, riot control, cro ...
is oleoresin capsicum (OC), an acrid irritant chemical derived from
cayenne pepper The cayenne pepper is a type of ''Capsicum annuum''. It is usually a moderately hot chili pepper used to flavor dishes. Cayenne peppers are a group of tapering, 10 to 25 cm long, generally skinny, mostly red-colored peppers, often with ...
plants. A 1998 estimate by the Internet Association of Chiefs of Police suggested at least 113 pepper spray-related fatalities had occurred in the United States, all with aggravating factors such as intoxication, pre-existing health problems, or from the police use of airway-restrictive immobilizing holds that can cause
positional asphyxia Positional asphyxia, also known as postural asphyxia, is a form of asphyxia which occurs when someone's position prevents the person from breathing adequately. People may die from positional asphyxia accidentally, when the mouth and nose are blo ...
. The Southern California chapter of the
American Civil Liberties Union The American Civil Liberties Union (ACLU) is a nonprofit organization founded in 1920 "to defend and preserve the individual rights and liberties guaranteed to every person in this country by the Constitution and laws of the United States". ...
recommends against maximal prone restraint techniques following pepper spray application, and they caution that anyone sprayed should be monitored to ensure effective breathing.


Tear gas

The use of chemical weapons such as
tear gas Tear gas, also known as a lachrymator agent or lachrymator (), sometimes colloquially known as "mace" after the early commercial aerosol, is a chemical weapon that stimulates the nerves of the lacrimal gland in the eye to produce tears. In ad ...
( CS) and pepper spray ( OC) has come under increasing scrutiny and criticism due to studies showing serious long term side effects. Many police forces are no longer exposing their members to the chemicals during training. Journalist
Rubén Salazar Ruben Salazar (March 3, 1928 – August 29, 1970) was a civil rights activist and a reporter for the ''Los Angeles Times,'' the first Mexican-American journalist from mainstream media to cover the Chicano community. Salazar was killed during the ...
was killed in Los Angeles in 1970 by an errant CS gas canister during the Chicano riots. Other serious injuries and fatalities have occurred from either tear gas itself or the projectiles it is delivered in, including the critical injury of veteran Scott Olsen from a tear gas canister during the 2011 Occupy Oakland protests.


Psychochemical

Psychochemical weapons are psychoactive drugs, such as BZ,
LSD Lysergic acid diethylamide (LSD), also known colloquially as acid, is a potent psychedelic drug. Effects typically include intensified thoughts, emotions, and sensory perception. At sufficiently high dosages LSD manifests primarily mental, vi ...
,
Kolokol-1 Kolokol-1 (russian: Колокол meaning "bell") is a synthetic opioid developed for use as an aerosolizable incapacitating agent. The exact chemical structure has not yet been revealed by the Russian government. It was originally thought by ...
, EA-3167, and 3-Methylamphetamine designed to have a disorienting effect when used during combat or interrogation.Rózsa L 2009
A psychochemical weapon considered by the Warsaw Pact: a research note. ''Substance Use & Misuse,'' 44, 172-178.
accessed: 27. 11. 2009.


Sleep gas

During the 2002
Moscow theater hostage crisis The Moscow theater hostage crisis (also known as the 2002 Nord-Ost siege) was the seizure of the crowded Dubrovka Theater by Chechen terrorists on 23 October 2002, which involved 850 hostages and ended with Russian security services killing o ...
, Russian special forces used an unidentified gas (thought to be 3-methylfentanyl or another
fentanyl Fentanyl, also spelled fentanil, is a very potent synthetic opioid used as a pain medication. Together with other drugs, fentanyl is used for anesthesia. It is also used illicitly as a recreational drug, sometimes mixed with heroin, cocaine, ...
variant dissolved in halothane gas) in an attempt to induce sleep in both hostages and terrorists. Many of the hostages and terrorists (including all of the suicide bombers) were anesthetized, but some terrorists donned gas masks and thus were able to avoid the effects of the gas. Because the agent used was a potent Fentanyl derivative (a synthetic opioid), it causes respiratory depression and ultimately respiratory failure if administered in high enough dosages. The central nervous system effects, such as anesthesia and respiratory depression could have been reversed by an opioid antagonist such as
naloxone Naloxone, sold under the brand names Narcan (4 mg) and Kloxxado (8 mg) among others, is a medication used to reverse or reduce the effects of opioids. It is commonly used to counter decreased breathing in opioid overdose. Effects begin within ...
, which is stocked by hospitals and most ambulances. However, because the Russian authorities did not release any information regarding what type of agent was used, medical professionals were unaware that an opioid had been used during the rescue attempt and thus were unable to administer the antidote which could have saved most hostages. Approximately 700 hostages were rescued, while 130 died from exposure to the gas. All the terrorists were ultimately killed by Russian forces through some combination of gas exposure and gunfire.


Other chemical agents

Blister agent A blister agent (or vesicant), is a chemical compound that causes severe skin, eye and mucosal pain and irritation. They are named for their ability to cause severe chemical burns, resulting in painful water blisters on the bodies of those affec ...
s, including
CR gas CR gas or dibenzoxazepine (chemical name dibenz 'b'',''f''1,4]oxazepine, is an incapacitating agent and a lachrymatory agent. CR was developed by the British Ministry of Defence as a riot control agent in the late 1950s and early 1960s. A report f ...
, are less often used riot control agents. Other irritants include
CS gas The compound 2-chlorobenzalmalononitrile (also called ''o''-chlorobenzylidene malononitrile; chemical formula: C10H5ClN2), a cyanocarbon, is the defining component of tear gas commonly referred to as CS gas, which is used as a riot control agen ...
and
nonivamide Nonivamide, also called pelargonic acid vanillylamide or PAVA, is an organic compound and a capsaicinoid. It is an amide of pelargonic acid (n-nonanoic acid) and vanillyl amine. It is present in chili peppers, but is commonly manufactured synth ...
(PAVA).


Sticky foam

Sticky foam was tried by the U.S. Marine Corps in the peacekeeping Operation United Shield in 1995 with some success, but as a result various complications in its field use were also discovered.


Area denial

Area denial weapons work by either incapacitating or deterring the enemy.


Anti-vehicle

Vehicle stoppers include a wide range of methods and devices meant to disable a vessel or vehicle to prevent attack by an oncoming vessel or vehicle or to stop that vessel or vehicle for evaluation. Vessel and vehicle stoppers may include kinetic, chemical, or electromagnetic means.


Anti-personnel


Caltrops

Simple rows or clusters of sharpened sticks (also known as
punji stick The punji stick or punji stake is a type of booby trapped stake. It is a simple spike, made out of wood or bamboo, which is sharpened, heated, and usually set in a hole. Punji sticks are usually deployed in substantial numbers. The '' Oxford Englis ...
s), and the use of small
caltrops A caltrop (also known as caltrap, galtrop, cheval trap, galthrap, galtrap, calthrop, jackrock or crow's foot'' Battle of Alesia'' (Caesar's conquest of Gaul in 52 BC), Battlefield Detectives program, (2006), rebroadcast: 2008-09-08 on History Ch ...
have been a feature of anti-
infantry Infantry is a military specialization which engages in ground combat on foot. Infantry generally consists of light infantry, mountain infantry, motorized infantry & mechanized infantry, airborne infantry, air assault infantry, and marine ...
warfare for centuries.Weaponry: The Caltrop
, Reid, Robert W., originally in ''
Military History Military history is the study of armed conflict in the history of humanity, and its impact on the societies, cultures and economies thereof, as well as the resulting changes to local and international relationships. Professional historians no ...
'', August 1998
They are known to have been in use since Roman times and may have been used earlier: the concept was familiar to the 4th century BC Greeks, who used rocks, brush, nets and trees placed in the path of enemy conveyances on land or ensnarement devices hidden under water to achieve the same result: stop the enemy or suspected hostile in his tracks for examination or to prevent or limit incursions. Contemporary caltrops look something like large jacks from the childhood game. Placed in the path of oncoming wheeled or tracked vehicles, they are meant to foul wheels, destroy tires and tracks, and incapacitate vehicles. However, due to the difficulty of mass-producing them in the pre-modern age, they were rarely used except in the defense of limited areas or chokepoints, especially during sieges, where they were used to help seal breaches. Increasing ease of production still did not prevent these methods from slowly falling out of favor from the late Middle Ages onward. Caltrops are still sometimes used in modern conflicts, such as during the
Korean War {{Infobox military conflict , conflict = Korean War , partof = the Cold War and the Korean conflict , image = Korean War Montage 2.png , image_size = 300px , caption = Clockwise from top:{{ ...
, where Chinese troops, often wearing only light shoes, were particularly vulnerable. In modern times, special caltrops are also sometimes used against wheeled vehicles with pneumatic tires. Some South American urban guerrillas as the
Tupamaros The Tupamaros – National Liberation Movement ( es, Movimiento de Liberación Nacional – Tupamaros, MLN-T), widely known as Tupamaros, was a Marxist-Leninist urban guerrilla group in Uruguay in the 1960s and 1970s. The MLN-T is inextricab ...
and
Montoneros Montoneros ( es, link=no, Movimiento Peronista Montonero-MPM) was an Argentine left-wing Peronist guerrilla organization, active throughout the 1970s and early 1980s. The name is an allusion to the 19th-century cavalry militias called Montone ...
called them "miguelitos" and used these as a tactic to avoid pursuit after ambushes.


Riot gun

In current usage a
riot gun In current usage, a riot gun or less-lethal launcher is a type of firearm used to fire "non-lethal" or "less-lethal" ammunition for the purpose of suppressing riots or apprehending suspects with minimal harm or risk. Less-lethal launchers may ...
or less-lethal launcher is a type of firearm that is used to fire "non-lethal" or "less-lethal" ammunition for the purpose of suppressing riots. Less-lethal launchers may be special purpose firearms designed for riot control use, or standard firearms, usually shotguns and grenade launchers, adapted to riot control use with appropriate ammunition. The ammunition is most commonly found in 12 gauge (.729 inches) shotguns and 37mm and 40 mm (1.46 and 1.57 inches) grenade launchers. In the United States, the term riot gun more commonly refers to a
riot shotgun A riot shotgun is a shotgun designed or modified for use as a primarily defensive weapon, by the use of a short barrel and sometimes a larger magazine capacity than shotguns marketed for hunting. The riot shotgun is used by military personnel fo ...
.


Electroshock weapons

Electroshock weapon An electroshock weapon is a less-lethal weapon that utilizes an electric shock to incapacitate a target by either temporarily disrupting voluntary muscle control and/or through pain compliance. There are several different types of electroshock w ...
s are incapacitant weapons used for subduing a person by administering electric shock aimed at disrupting superficial muscle functions. One type is a conductive energy device (CED), an electroshock gun popularly known by the brand name "
Taser A taser is an electroshock weapon used to incapacitate people, allowing them to be approached and handled in an unresisting and thus safe manner. It is sold by Axon (company), Axon, formerly TASER International. It fires two small barbed d ...
", which fires projectiles that administer the shock through a thin, flexible wire. Other electroshock weapons such as stun guns, stun batons, and electroshock belts administer an electric shock by direct contact.


Directed energy weapons

Directed energy weapons are weapons that emit energy in an aimed direction without the means of a projectile. They are non-lethal and can immobilize people as well as machines (e.g. vehicles). Directed energy weapons include electromagnetic weapons, (including
laser weapon A laser weapon is a directed-energy weapon based on lasers. After decades of R&D, directed-energy weapons including lasers are still at the experimental stage and it remains to be seen if or when they will be deployed as practical, high-perfo ...
s) and
microwave Microwave is a form of electromagnetic radiation with wavelengths ranging from about one meter to one millimeter corresponding to frequencies between 300 MHz and 300 GHz respectively. Different sources define different frequency rang ...
weapons,
particle beam weapon A particle-beam weapon uses a high-energy beam of atomic or subatomic particles to damage the target by disrupting its atomic and/or molecular structure. A particle-beam weapon is a type of directed-energy weapon, which directs energy in a part ...
s,
sonic weapon Sonic and ultrasonic weapons (USW) are weapons of various types that use sound to injure or incapacitate an opponent. Some sonic weapons make a focused beam of sound or of ultrasound; others produce an area field of sound. military and police ...
s and
plasma weapon A directed-energy weapon (DEW) is a ranged weapon that damages its target with highly focused energy without a solid projectile, including lasers, microwaves, particle beams, and sound beams. Potential applications of this technology include w ...
s.


Ultraviolet laser

HSV Technologies, Inc. (named for its founders, Herr, Schlesinger and Vernon; not to be confused with Holden Special Vehicles), formerly of
San Diego, California San Diego ( , ; ) is a city on the Pacific Ocean coast of Southern California located immediately adjacent to the Mexico–United States border. With a 2020 population of 1,386,932, it is the eighth most populous city in the United States ...
, USA, then Port Orchard, WA, designed a non-lethal device which was profiled in the 2002 ''
TIME Time is the continued sequence of existence and events that occurs in an apparently irreversible succession from the past, through the present, into the future. It is a component quantity of various measurements used to sequence events, t ...
'' magazine article "Beyond the Rubber Bullet". It is an
electrolaser An electrolaser is a type of electroshock weapon that is also a directed-energy weapon. It uses lasers to form an electrically conductive ''laser-induced plasma channel'' (LIPC). A fraction of a second later, a powerful electric current is sent ...
using
ultraviolet Ultraviolet (UV) is a form of electromagnetic radiation with wavelength from 10 nm (with a corresponding frequency around 30  PHz) to 400 nm (750  THz), shorter than that of visible light, but longer than X-rays. UV radiatio ...
laser A laser is a device that emits light through a process of optical amplification based on the stimulated emission of electromagnetic radiation. The word "laser" is an acronym for "light amplification by stimulated emission of radiation". The firs ...
beams of 193 nm, and promises to immobilize living targets at a distance without contact. There is plan for an engine-disabling variation for use against the electronic ignitions of cars using a 248 nm laser. The lead inventor, Eric Herr, died in 2008 and the company appears to have been dissolved, with their website defunct as of September 2017.


Pulsed energy projectile

Pulsed energy projectiles or (PEP) is a technology of non-lethal
directed energy weapon A directed-energy weapon (DEW) is a ranged weapon that damages its target with highly focused energy without a solid projectile, including lasers, microwaves, particle beams, and sound beams. Potential applications of this technology include we ...
ry currently under development by the
US military The United States Armed Forces are the military forces of the United States. The armed forces consists of six service branches: the Army, Marine Corps, Navy, Air Force, Space Force, and Coast Guard. The president of the United States is the ...
. It involves the emission of an invisible
laser A laser is a device that emits light through a process of optical amplification based on the stimulated emission of electromagnetic radiation. The word "laser" is an acronym for "light amplification by stimulated emission of radiation". The firs ...
pulse which, upon contact with the target, ablates the surface and creates a small amount of exploding plasma. This produces a pressure wave designed to stun the target and knock them off their feet, and
electromagnetic radiation In physics, electromagnetic radiation (EMR) consists of waves of the electromagnetic (EM) field, which propagate through space and carry momentum and electromagnetic radiant energy. It includes radio waves, microwaves, infrared, (visible) ligh ...
that affects
nerve cells A neuron, neurone, or nerve cell is an electrically excitable cell that communicates with other cells via specialized connections called synapses. The neuron is the main component of nervous tissue in all animals except sponges and placozoa. No ...
causing a painful sensation. The pulsed energy projectile is intended for
riot control Riot control measures are used by law enforcement, military, paramilitary or security forces to control, disperse, and arrest people who are involved in a riot, unlawful demonstration or unlawful protest. If a riot is spontaneous and irrat ...
and is said to work over distances of up to 2 km. It weighs about 230 kg and will probably be mounted on vehicles. The weight could become lighter as laser production technology improves. The system was developed by Mission Research Corporation (now owned by
Orbital ATK Northrop Grumman Innovation Systems (NGIS) was a sector (business segment) of Northrop Grumman from 2018 through 2019. It was formed from Orbital ATK Inc. a company which resulted from the merger of Orbital Sciences Corporation and parts of Alli ...
). It uses a chemical
deuterium fluoride laser The hydrogen fluoride laser is an infrared chemical laser. It is capable of delivering continuous output power in the megawatt range. Hydrogen fluoride lasers operate at the wavelength of 2.7-2.9  µm. This wavelength is absorbed by the atmosp ...
device producing
infrared Infrared (IR), sometimes called infrared light, is electromagnetic radiation (EMR) with wavelengths longer than those of visible light. It is therefore invisible to the human eye. IR is generally understood to encompass wavelengths from around ...
laser pulses. The plasma (produced by the early part of the pulse) explodes because its
electron The electron ( or ) is a subatomic particle with a negative one elementary electric charge. Electrons belong to the first generation of the lepton particle family, and are generally thought to be elementary particles because they have no kno ...
s absorb the energy of the later part of the pulse. In 2003, a US military review reported that the electromagnetic radiation produced by PEPs had been shown to cause pain and temporary paralysis in animal experiments. United States Special Operations Command FY 2010 plans included starting developmental work on a counter UAV pulsed energy projectile.


Active denial system

An
active denial system The Active Denial System (ADS) is a non-lethal directed-energy weapon developed by the U.S. military, designed for area denial, perimeter security and crowd control. Informally, the weapon is also called the heat ray since it works by heating t ...
(ADS) is a dish that projects electromagnetic radiation just powerful enough to penetrate human skin and make the victim feel as though they are on fire, although no physical damage is done. Future combat vehicles such as the American
GCV Infantry Fighting Vehicle The Ground Combat Vehicle (GCV) was the United States Army's replacement program for armored fighting vehicles in Armored and Stryker brigade combat teams. The GCV was organized under the ''Follow On Incremental Capabilities Package'' of the ...
incorporate non-lethal weapons. The ADS is a non-lethal,
directed-energy weapon A directed-energy weapon (DEW) is a ranged weapon that damages its target with highly focused energy without a solid projectile, including lasers, microwaves, particle beams, and sound beams. Potential applications of this technology include w ...
developed by the
US military The United States Armed Forces are the military forces of the United States. The armed forces consists of six service branches: the Army, Marine Corps, Navy, Air Force, Space Force, and Coast Guard. The president of the United States is the ...
, designed for area denial, perimeter security and crowd control. Informally, the weapon has also been referred to as a "heat ray",Ross Kerber
"Ray gun, sci-fi staple, meets reality"
''
Boston Globe ''The Boston Globe'' is an American daily newspaper founded and based in Boston, Massachusetts. The newspaper has won a total of 27 Pulitzer Prizes, and has a total circulation of close to 300,000 print and digital subscribers. ''The Boston Glob ...
'', September 24, 2004.
since it works by heating the surface of targets, such as the skin of targeted human subjects. In 2011, the ADS was redesigned to make it smaller, more reliable, and able to be used on the move. The ADS II is being designed to operate from moving aircraft, as well as moving ground vehicles. The redesign does not address problems in different environmental conditions.Death Ray Turns Warm And Fuzzy
– Strategypage.com, October 3, 2012
Air Force Special Operations Command Air Force Special Operations Command (AFSOC), headquartered at Hurlburt Field, Florida, is the special operations component of the United States Air Force. An Air Force major command (MAJCOM), AFSOC is also the U.S. Air Force component command ...
is experimenting with mounting an ADS on the AC-130J Ghostrider gunship to target threatening crowds or individuals on the ground. This is to give the gunship a non-lethal option so the crew has more engagement options. Due to the increasing number of engagements in populated areas, the Air Force is aiming to field a system within 10 years to have enough aircraft available with non-lethal systems.US Special Forces pursuing AC-130-based 'active denial system'
- Flightglobal.com, 29 July 2015
The aircraft will apparently use the ADS II version.AC-130J Gets A Ray Gun
- Strategypage.com, 10 August 2015


Dazzler

A dazzler is a
directed-energy weapon A directed-energy weapon (DEW) is a ranged weapon that damages its target with highly focused energy without a solid projectile, including lasers, microwaves, particle beams, and sound beams. Potential applications of this technology include w ...
intended to temporarily blind or disorient its target with intense directed radiation. Targets can include sensors or human vision. Dazzlers emit
infrared Infrared (IR), sometimes called infrared light, is electromagnetic radiation (EMR) with wavelengths longer than those of visible light. It is therefore invisible to the human eye. IR is generally understood to encompass wavelengths from around ...
or invisible light against various electronic sensors, and
visible light Light or visible light is electromagnetic radiation that can be perceived by the human eye. Visible light is usually defined as having wavelengths in the range of 400–700 nanometres (nm), corresponding to frequencies of 750–420 tera ...
against humans, when they are intended to cause no long-term damage to
eye Eyes are organs of the visual system. They provide living organisms with vision, the ability to receive and process visual detail, as well as enabling several photo response functions that are independent of vision. Eyes detect light and con ...
s. The emitters are usually
laser A laser is a device that emits light through a process of optical amplification based on the stimulated emission of electromagnetic radiation. The word "laser" is an acronym for "light amplification by stimulated emission of radiation". The firs ...
s, making what is termed a ''laser dazzler''. Most of the contemporary systems are man-portable, and operate in either the red (a
laser diode The laser diode chip removed and placed on the eye of a needle for scale A laser diode (LD, also injection laser diode or ILD, or diode laser) is a semiconductor device similar to a light-emitting diode in which a diode pumped directly with e ...
) or green (a
diode-pumped solid-state laser A diode-pumped solid-state laser (DPSSL) is a solid-state laser made by pumping a solid gain medium, for example, a ruby or a neodymium-doped YAG crystal, with a laser diode. DPSSLs have advantages in compactness and efficiency over other types ...
, DPSS) areas of the
electromagnetic spectrum The electromagnetic spectrum is the range of frequencies (the spectrum) of electromagnetic radiation and their respective wavelengths and photon energies. The electromagnetic spectrum covers electromagnetic waves with frequencies ranging from b ...
. Initially developed for military use, non-military products are becoming available for use in law enforcement and security. Weapons designed to cause permanent blindness are banned by the 1995
United Nations The United Nations (UN) is an intergovernmental organization whose stated purposes are to maintain international peace and security, develop friendly relations among nations, achieve international cooperation, and be a centre for harmonizi ...
Protocol on Blinding Laser Weapons. The dazzler is a
non-lethal Non-lethal weapons, also called nonlethal weapons, less-lethal weapons, less-than-lethal weapons, non-deadly weapons, compliance weapons, or pain-inducing weapons are weapons intended to be less likely to kill a living target than conventional ...
weapon A weapon, arm or armament is any implement or device that can be used to deter, threaten, inflict physical damage, harm, or kill. Weapons are used to increase the efficacy and efficiency of activities such as hunting, crime, law enforcement, ...
intended to cause temporary blindness or disorientation and therefore falls outside this protocol. The
personnel halting and stimulation response rifle The personnel halting and stimulation response rifle (PHASR) is a prototype non-lethal laser dazzler developed by the Air Force Research Laboratory's Directed Energy Directorate, U.S. Department of Defense. Its purpose is to temporarily disorie ...
(PHASR) is a prototype
non-lethal Non-lethal weapons, also called nonlethal weapons, less-lethal weapons, less-than-lethal weapons, non-deadly weapons, compliance weapons, or pain-inducing weapons are weapons intended to be less likely to kill a living target than conventional ...
laser A laser is a device that emits light through a process of optical amplification based on the stimulated emission of electromagnetic radiation. The word "laser" is an acronym for "light amplification by stimulated emission of radiation". The firs ...
dazzler developed by the Air Force Research Laboratory's Directed Energy Directorate, U.S.
Department of Defense Department of Defence or Department of Defense may refer to: Current departments of defence * Department of Defence (Australia) * Department of National Defence (Canada) * Department of Defence (Ireland) * Department of National Defense (Philippi ...
. Its purpose is to temporarily disorient and blind a target. Blinding laser weapons have been tested in the past, but were banned under the 1995 UN Protocol on Blinding Laser Weapons, which the United States acceded to on 21 January 2009. The PHASR rifle, a low-intensity laser, is not prohibited under this regulation, as the blinding effect is intended to be temporary. It also uses a two-wavelength laser. The PHASR was tested at
Kirtland Air Force Base Kirtland Air Force Base is a United States Air Force base located in the southeast quadrant of the Albuquerque, New Mexico urban area, adjacent to the Albuquerque International Sunport. The base was named for the early Army aviator Col. ...
, part of the
Air Force Research Laboratory The Air Force Research Laboratory (AFRL) is a scientific research organization operated by the United States Air Force Materiel Command dedicated to leading the discovery, development, and integration of aerospace warfighting technologies, pl ...
Directed Energy Directorate in
New Mexico ) , population_demonym = New Mexican ( es, Neomexicano, Neomejicano, Nuevo Mexicano) , seat = Santa Fe, New Mexico, Santa Fe , LargestCity = Albuquerque, New Mexico, Albuquerque , LargestMetro = Albuquerque metropolitan area, Tiguex , Offi ...
.


Blinding laser weapons

Several nations developed blinding laser weapons and they were allegedly used during War in Donbass by Russia.


Long Range Acoustic Device

The
Long Range Acoustic Device A long-range acoustic device (LRAD) is an acoustic hailing device (AHD), sound cannon and sonic weapon developed by Genasys. It has been used as a method of crowd control, which has caused permanent hearing damage, having an extremely hi ...
(LRAD) is an
acoustic hailing device An acoustic hailing device (AHD) is a specialized loudspeaker that produces sound at high power for communicating at a distance. AHDs vary in design, output, and usability. Overview Acoustic hailing devices are acoustic devices capable of out ...
developed by LRAD Corporation to send messages and warning tones over longer distances or at higher volume than normal
loudspeaker A loudspeaker (commonly referred to as a speaker or speaker driver) is an electroacoustic transducer that converts an electrical audio signal into a corresponding sound. A ''speaker system'', also often simply referred to as a "speaker" or " ...
s. LRAD systems are used for long-range communications in a variety of applications including as a means of non-lethal, non-kinetic crowd control. Though they have been called "sonic weapons", LRADs are not inherently for military use. The round black devices on top of New York City police Hummers are LRADs. According to the manufacturer's specifications, the systems weigh from and can emit sound in a 30°- 60° beam at 2.5 kHz. The manufacturer also produces systems for public address and mass notification use that broadcast 360°.


Safety and legal status

In the United States, the University of Texas-Austin Institute for Advanced Technology (IAT) conducts basic research to advance electrodynamics and hypervelocity physics related to electromagnetic weapons. Although generally considered "non-lethal weapons", electromagnetic weapons do pose health threats to humans. In fact, "non-lethal weapons can sometimes be deadly."
United States Department of Defense The United States Department of Defense (DoD, USDOD or DOD) is an executive branch department of the federal government charged with coordinating and supervising all agencies and functions of the government directly related to national secur ...
policy explicitly states that non-lethal weapons "shall not be required to have a zero probability of producing fatalities or permanent injuries." Although a Human Effects Advisory Panel was established in 1998 to provide independent assessment on human effects, data, and models for the use of 'non-lethal weapons' on the general population, the TECOM Technology Symposium in 1997 concluded on non-lethal weapons: "Determining the target effects on personnel is the greatest challenge to the testing community," primarily because "the potential of injury and death severely limits human tests." However, " directed energy weapons that target the central nervous system and cause neurophysiological disorders" may violate the
Convention on Certain Conventional Weapons The United Nations Convention on Certain Conventional Weapons (CCW or CCWC), concluded at Geneva on October 10, 1980, and entered into force in December 1983, seeks to prohibit or restrict the use of certain conventional weapons which are consid ...
of 1980. And weapons that go beyond non-lethal intentions and cause "superfluous injury or unnecessary suffering" could violate the
Protocol I Protocol I (sometimes referred to as Additional Protocol I or AP 1) is a 1977 amendment protocol to the Geneva Conventions relating to the protection of victims of ''international conflicts'', extending to "armed conflicts in which peoples ar ...
to the
Geneva Conventions upright=1.15, Original document in single pages, 1864 The Geneva Conventions are four treaties, and three additional protocols, that establish international legal standards for humanitarian treatment in war. The singular term ''Geneva Conven ...
of 1977." Safety and evaluation of the physical and psychological effects of the long-term or repetitive uses of the
pain Pain is a distressing feeling often caused by intense or damaging stimuli. The International Association for the Study of Pain defines pain as "an unpleasant sensory and emotional experience associated with, or resembling that associated with, ...
-inducing non-lethal weapons on humans have not been well understood or studied in any great details. Any such studies require explicit consent of all participants so as not to violate the UN Convention against torture and other cruelties.


Misuse

Pepper spray is one non-lethal weapon alleged to have been misused by American police. In two incidents in California in 1997, police swabbed pepper spray directly into the eyes of protesters.
USA: Police use of pepper spray - tantamount to torture
'.
Amnesty International Amnesty International (also referred to as Amnesty or AI) is an international non-governmental organization focused on human rights, with its headquarters in the United Kingdom. The organization says it has more than ten million members and sup ...
, 4 November 1997.
Amnesty International Amnesty International (also referred to as Amnesty or AI) is an international non-governmental organization focused on human rights, with its headquarters in the United Kingdom. The organization says it has more than ten million members and sup ...
condemned these actions, and claimed that they were likely a violation of the 1984
United Nations Convention Against Torture The Convention Against Torture and Other Cruel, Inhuman or Degrading Treatment or Punishment (commonly known as the United Nations Convention Against Torture (UNCAT)) is an international human rights treaty under the review of the United Nation ...
.


Terrorism concerns

Loren Thompson, chief operating officer of the
Lexington Institute The Lexington Institute is a center-right think tank headquartered in Arlington, Virginia, United States. It focuses mainly on defense and security policy. History, staff, and positions The Lexington Institute was founded in 1998 by former U.S ...
in Virginia states that: "The relevant (electromagnetic weapon) technology is well within the grasp of some countries and transnational
terrorist Terrorism, in its broadest sense, is the use of criminal violence to provoke a state of terror or fear, mostly with the intention to achieve political or religious aims. The term is used in this regard primarily to refer to intentional violen ...
groups", and further states that U.S. hardware is susceptible to microwave and other directed-energy weapons. Suitable materials and tools to create electromagnetic weapons are commonly available. "The threat of electromagnetic bomb proliferation is very real."


See also

*
Demoralization (warfare) Demoralization is, in a context of warfare, national security, and law enforcement, a process in psychological warfare with the objective to erode morale among enemy combatants and/or noncombatants. That can encourage them to retreat, surrender, ...
*
Electronic warfare Electronic warfare (EW) is any action involving the use of the electromagnetic spectrum (EM spectrum) or directed energy to control the spectrum, attack an enemy, or impede enemy assaults. The purpose of electronic warfare is to deny the opponen ...
*
Gas pistol A gas pistol is a non-lethal weapon used for self-defense and other purposes. It is typically a close-to-exact replica or conversion of a traditional handgun made to be able to fire blanks or tear gas cartridges. Effective range is up to 4.5 met ...
* LED Incapacitator * Net gun *
New physical principles weapons New physical principles weapons are a wide range of weapons or systems created using emerging technologies, like wave, psychophysical, and genetic weapons. This definition is similar to "new types of weapons of mass destruction and new systems o ...
*
Pain compliance Pain compliance is the use of painful stimulus to control or direct an organism. The stimulus can be manual (brute force, placing pressure on painful areas, or use of painful hyperextension or hyperflexion on joints), use tools such as a whip or e ...
*
Peroneal strike A peroneal strike is a temporarily disabling blow to the common fibular (peroneal) nerve of the leg, just above the knee. The attacker aims roughly a hand span above the exterior side of the knee, towards the back of the leg. This causes a tempor ...
(hand-to-hand technique) * R.I.P. cartridge * Stun belt *
Tranquillizer gun A dart gun is an air rifle that fires a dart. The dart is tipped with a hypodermic needle and filled with a tranquilizer, vaccine, or antibiotic. A dart gun containing a tranquillizer is called a tranquillizer gun ( also spelled tranquilizer, t ...


Notes


External links


Council on Foreign Relations Independent Task Force Report on Nonlethal Weapons



Weapons of Mass Protection, Air Force Journal article on Nonlethal Weapons.

The Sunshine Project, 'Non-Lethal' Incapacitating (Bio)Chemical Weapons (website)

Centre for Conflict Resolution, Department of Peace Studies, Bradford Non-Lethal Weapons Research Project (BNLWRP), Research Report No. 8



Less-Lethal.org - Non Lethal and Less Lethal Law Enforcement Technologies
Hosted by the
International Association of Chiefs of Police International Association of Chiefs of Police (IACP) is a nonprofit organization based in Alexandria, Virginia (United States). It is the world's largest professional association for police The police are a Law enforcement organization, ...
(IACP).
US Deptment of Defense Non-Lethal Weapons Program
{{DEFAULTSORT:Non-Lethal Weapon Anti-personnel weapons Area denial weapons Incapacitating agents Law enforcement equipment Law enforcement techniques Military equipment Paramilitary equipment Peacekeeping Weapons