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Security police officers are employed by or for a governmental agency or corporations to provide security service
security services Security Service or security service may refer to: Government * Security agency, a nation's institution for intelligence gathering * List of security agencies (MI5, NSA, KGB, etc.) * (SD), Nazi German agency which translates as "Security Servi ...
to those properties. Security police protect facilities, properties, personnel, users, visitors and enforce certain laws and administrative regulations. Most security police have limited arrest authority. The law enforcement powers of security police vary by federal, state and city law. Different from general Police departments, the primary focus of security police is on the protection of specific properties or facilities. This causes some overlap with functions normally performed by security guards. In some countries, ''security police'' is the name given to the secret
security" \n\n\nsecurity.txt is a proposed standard for websites' security information that is meant to allow security researchers to easily report security vulnerabilities. The standard prescribes a text file called \"security.txt\" in the well known locat ...
and intelligence services charged with protecting the
state State may refer to: Arts, entertainment, and media Literature * ''State Magazine'', a monthly magazine published by the U.S. Department of State * ''The State'' (newspaper), a daily newspaper in Columbia, South Carolina, United States * '' Our ...
at the highest level, including responsibilities such as personal protection of the
head of state A head of state (or chief of state) is the public persona who officially embodies a state (polity), state#Foakes, Foakes, pp. 110–11 " he head of statebeing an embodiment of the State itself or representatitve of its international p ...
,
counter-espionage Counterintelligence is an activity aimed at protecting an agency's intelligence program from an opposition's intelligence service. It includes gathering information and conducting activities to prevent espionage, sabotage, assassinations or ...
, and anti-terrorism.


Types of special police and similar organizations

Examples of Special police may include:


United States

* Campus special / security police, who are often hired and sworn in as state law enforcement officers. * Housing special / security police, who protect publicly owned housing or "housing facilities" * Hospital / Medical center special / security police such as the Texas Medical Center Police * Park special / security police, who primarily protect parks facilities. * Capitol special / security police, who protect state properties such as legislative and executive buildings, which can also include executive protection functions * Special police (also '' auxiliary police''), in the protection of public properties, such as the
United States Holocaust Memorial Museum The United States Holocaust Memorial Museum (USHMM) is the United States' official memorial to the Holocaust. Adjacent to the National Mall in Washington, D.C., the USHMM provides for the documentation, study, and interpretation of Holocaust hi ...
which is protected by sworn special police officers as authorized by D.C. Code, § 4-114 (1981) * Court special / security officer who provide police and security services at court houses *
Company police Company police, also called ''private police'', are privately paid law enforcement officers who work for private security companies or private military companies rather than a municipal, county, state, or national agency. Malaysia In Malaysia, aux ...
to provide security police services on company or private property by contract, where local law permits private organizations to contract for police powers; this for example includes
railway police Railroad police or railway police are people responsible for the protection of railroad (or railway) properties, facilities, revenue, equipment (train cars and locomotives), and personnel, as well as carried passengers and cargo. Railroad police ...
. *
U.S. Federal Reserve Police The U.S. Federal Reserve Police is the law enforcement unit of the Federal Reserve System, the central banking system of the United States. History Federal Reserve System Law Enforcement Officers derive their authority from Section 11(q) of ...
, the law enforcement unit of the Federal Reserve System, the central banking system of the United States


Legal authority of special / security police officers

All special / security police officers derive their authority from the listed sources: * The laws of their nation, territory or municipality federal / state / city * The property rights of their employing or contracting agency or activity, which may be public or private or a mixture of both These powers may include limited power to detain, arrest, investigate criminal offenses, carry weapons. Some special / security police have
peace officer A law enforcement officer (LEO), or peace officer in North American English, is a public-sector employee whose duties primarily involve the enforcement of laws. The phrase can include campaign disclosure specialists, local police officers, pro ...
s with the same powers as regular peace officers. Others have enhanced powers which are limited by law to their specific location.


Special special / security police around the world


Australia

The
RAAF "Through Adversity to the Stars" , colours = , colours_label = , march = , mascot = , anniversaries = RAAF Anniversary Commemoration ...
Security Police is responsible for base security and policing the RAAF and they work closely with the
Airfield Defence Guards Airfield Defence Guards (ADG) are a mustering of the Royal Australian Air Force (RAAF) that are dedicated to the security and ground defence of airbases and other military aviation assets. Defence Jobs website Accessed on 22 June 2008 Other duti ...
. The Military Working Dog Unit also provides a further security function. Most state police force in Australia employs a team of officers known as ''Protective Services Officers'' (PSOs). Stationed in and around public or government buildings, these PSOs are armed (to varying degrees) and wear slightly different uniforms. They are also called upon by regular police officers if the need arises. They generally undergo training at the state police college and share many resources. Some police officers have used the PSO path as a stepping stone to their current roles. In
New South Wales ) , nickname = , image_map = New South Wales in Australia.svg , map_caption = Location of New South Wales in AustraliaCoordinates: , subdivision_type = Country , subdivision_name = Australia , established_title = Before federation , es ...
, an armed internal unit of the
New South Wales Police Force The New South Wales Police Force (NSW Police Force; previously the New South Wales Police Service and New South Wales Police) is the primary law enforcement agency of the state of New South Wales, Australia. Divided into Police Area Commands ...
is staffed by special constables who hold identical powers and immunities of police officers at the rank of constable. Special constables wear similar uniforms to police officers, carry arms and appointments and are issued warrant cards and badges. Special constables provide security services to select government and police complexes.


Germany

The Polizei beim Deutschen Bundestag (Polizei DBT, commonly known as ''Bundestagspolizei'') is the smallest and least known police agency in
Germany Germany, officially the Federal Republic of Germany (FRG),, is a country in Central Europe. It is the most populous member state of the European Union. Germany lies between the Baltic and North Sea to the north and the Alps to the sou ...
. It is responsible for the protection of the premises of the
Bundestag The Bundestag (, "Federal Diet (assembly), Diet") is the German Federalism, federal parliament. It is the only federal representative body that is directly elected by the German people. It is comparable to the United States House of Representat ...
in
Berlin Berlin is Capital of Germany, the capital and largest city of Germany, both by area and List of cities in Germany by population, by population. Its more than 3.85 million inhabitants make it the European Union's List of cities in the European U ...
. Because the chief of the ''Bundestagspolizei'' is the president of the
Bundestag The Bundestag (, "Federal Diet (assembly), Diet") is the German Federalism, federal parliament. It is the only federal representative body that is directly elected by the German people. It is comparable to the United States House of Representat ...
(Federal Parliament of Germany) and not the minister of the interior, it can not be called a federal police agency. The number of their officers is not published yet. The ''Bundestagspolizei'' recruit their staff from all German police agencies, only skilled officers are accepted.


Hong Kong

A special division of the
Hong Kong Police Force The Hong Kong Police Force (HKPF) is the primary law enforcement, investigative agency, and largest disciplined service under the Security Bureau of Hong Kong. The Royal Hong Kong Police Force (RHKPF) reverted to its former name after the t ...
, known as the Airport Security Unit (ASU), has been engaged by airports in
Hong Kong Hong Kong ( (US) or (UK); , ), officially the Hong Kong Special Administrative Region of the People's Republic of China (abbr. Hong Kong SAR or HKSAR), is a city and special administrative region of China on the eastern Pearl River Delta i ...
(HK), to provide security services. These personnel have higher fitness standards and are issued with heavier firepower, than ordinary HK police officers.


India

The
Indian central government The Government of India (ISO: ; often abbreviated as GoI), known as the Union Government or Central Government but often simply as the Centre, is the national government of the Republic of India, a federal democracy located in South Asia, co ...
maintains several security police forces: The CISF is The Central Industrial Security Force (established in its present form: June 15, 1983) is a paramilitary security force in India. The CISF duties are to protect public properties and private properties, as well as: **To protect public sector **To protect private sector **Airport security It is one of the largest central paramilitary forces in India. Strength is nearly 105,000 and rivals other countries when it comes to a government agency providing security to such a large number of industries. Many of the international airports in India were the responsibility of the city or district police. CSIA for example, was originally serviced by members of
Mumbai Police The Mumbai Police (Marathi: मुंबई पोलीस, IAST: ''Mumbaī Pulīs'', formerly ''Bombay Police'') is the police department of the city of Mumbai, Maharashtra. It is a part of Maharashtra Police and has the primary responsibiliti ...
(then known as
Bombay Police The Mumbai Police (Marathi: मुंबई पोलीस, IAST: ''Mumbaī Pulīs'', formerly ''Bombay Police'') is the police department of the city of Mumbai, Maharashtra. It is a part of Maharashtra Police and has the primary responsibiliti ...
), but contract for security has been handed over to the CISF. The Railway Protection Force (RPF) is known for protecting the railways of India and ensuring safety of citizens in trains. The
Defence Security Force The Defence Security Corps (DSC), is a corps of the Indian Army responsible for providing security cover to the defence installations of the three services ( Army, Navy, Air Force) and other sensitive installations. The DSC troops are sanctio ...
protects
Ministry of Defence {{unsourced, date=February 2021 A ministry of defence or defense (see spelling differences), also known as a department of defence or defense, is an often-used name for the part of a government responsible for matters of defence, found in state ...
property.


Japan

In Japan, security police, also known as "SP" are law enforcement officers that provide security for domestic and foreign dignitaries. Their role to dignitary protection is similar to that of the
United States Secret Service The United States Secret Service (USSS or Secret Service) is a Federal law enforcement in the United States, federal law enforcement agency under the United States Department of Homeland Security, Department of Homeland Security charged with co ...
.


Malaysia

The Royal Malaysia Police are generally responsible for protecting and policing the airports, seaports and government sites in
Malaysia Malaysia ( ; ) is a country in Southeast Asia. The federation, federal constitutional monarchy consists of States and federal territories of Malaysia, thirteen states and three federal territories, separated by the South China Sea into two r ...
. Unlike several other countries, there is no state police for individual states.


Portugal

The Navy Establishments Police ( pt, Polícia dos Estabelecimentos da Marinha) is a small security police force responsible for protecting several of the facilities of the
Portuguese Navy The Portuguese Navy ( pt, Marinha Portuguesa, also known as ''Marinha de Guerra Portuguesa'' or as ''Armada Portuguesa'') is the naval branch of the Portuguese Armed Forces which, in cooperation and integrated with the other branches of the Por ...
, including the navy central administration buildings, the Lisbon Naval Base and the Navy Museum. The Navy Establishments Police is a non-military service, in contrast with the Naval Police (''Polícia Naval'') which is the
Portuguese Navy The Portuguese Navy ( pt, Marinha Portuguesa, also known as ''Marinha de Guerra Portuguesa'' or as ''Armada Portuguesa'') is the naval branch of the Portuguese Armed Forces which, in cooperation and integrated with the other branches of the Por ...
's military police.


South Africa

During the 1960s the South African Security Police were known for detaining and interrogating members of the public, often leading to the victims death or disappearance, especially in the height of the
Apartheid Apartheid (, especially South African English: , ; , "aparthood") was a system of institutionalised racial segregation that existed in South Africa and South West Africa (now Namibia) from 1948 to the early 1990s. Apartheid was ...
era.


Sri Lanka

During the 1990s the
Sri Lanka Police (The one who lives by the Dhamma is protected by the Dhamma itself) , mission = , formedyear = , preceding1 = Ceylon Police Force (1866–1972) , dissolved = , superseding = , employees = ...
created a sub unit with its members known as ''police security assistants''. They were mostly limited to protection of police and governmental facilities.


Sweden

An ''ordningsvakt'' is a person deputized by the
Swedish Police Authority The Swedish Police Authority ( sv, Polismyndigheten) is the national police force (''Polisen'') of the Kingdom of Sweden. The first modern police force in Sweden was established in the mid-19th century, and the police remained in effect under lo ...
to act as a law enforcement officer with limited police powers. His main mission is to assist in maintaining public order. An ''ordningsvakt'' may carry a baton, firearm, and
handcuffs Handcuffs are restraint devices designed to secure an individual's wrists in proximity to each other. They comprise two parts, linked together by a chain, a hinge, or rigid bar. Each cuff has a rotating arm which engages with a ratchet that ...
, may use a police dog, and is authorized to use force if necessary to maintain order. An ''ordningsvakt'' may reject, remove and, if necessary, detain, a person who disturbs the public order in his area of responsibility. He may also detain persons suffering from
alcohol intoxication Alcohol intoxication, also known as alcohol poisoning, commonly described as drunkenness or inebriation, is the negative behavior and physical effects caused by a recent consumption of alcohol. In addition to the toxicity of ethanol, the main ...
, seize
alcoholic beverages An alcoholic beverage (also called an alcoholic drink, adult beverage, or a drink) is a drink that contains ethanol, a type of alcohol that acts as a drug and is produced by fermentation of grains, fruits, or other sources of sugar. The c ...
, make a
citizen's arrest A citizen's arrest is an arrest made by a private citizen – that is, a person who is not acting as a sworn law-enforcement official. In common law jurisdictions, the practice dates back to medieval England and the English common law, in which ...
(as everyone else), seize
evidence Evidence for a proposition is what supports this proposition. It is usually understood as an indication that the supported proposition is true. What role evidence plays and how it is conceived varies from field to field. In epistemology, eviden ...
after a citizen's arrest, and search a detained person. Detained persons and evidence are to be turned over to the police, who has a general command authority over him. An ''ordningsvakt'' carries a special badge, and, since 2012, wears a standardized uniform (irrespective of employer). In February 2021, there were 7,830 persons deputized as ''ordningsvakter'' in Sweden. Of these, about 4,100 were employed by security companies while the rest had personal assignments from private or public clients. Previously, the assignments were mostly on a persona basis keeping public order at public events of a short duration such as soccer games and dances. Nowadays they also serve as employees of security firms on a permanent basis in the Stockholm metro, in courts and at public meetings in municipalities and regions. The number of sworn police officers in Sweden were at about the same time 20,942. "Ny statistik visar på rekordnivåer av antalet polisanställda." ''Regeringskansliet.''
Retrieved 2022-02-13.


Taiwan

The special police (保安警察, ''Bao-an Jingcha'') is known as the Security Police of
Taiwan Taiwan, officially the Republic of China (ROC), is a country in East Asia, at the junction of the East and South China Seas in the northwestern Pacific Ocean, with the People's Republic of China (PRC) to the northwest, Japan to the northe ...
.


United Kingdom


Northern Ireland

The Northern Ireland Security Guard Service (not to be confused with MOD Police or MPGS) is a civilian armed guard service in which all civilian security officers are attested as special constables. They provide security at
Ministry of Defence {{unsourced, date=February 2021 A ministry of defence or defense (see spelling differences), also known as a department of defence or defense, is an often-used name for the part of a government responsible for matters of defence, found in state ...
establishments in
Northern Ireland Northern Ireland ( ga, Tuaisceart Éireann ; sco, label=Ulster-Scots, Norlin Airlann) is a part of the United Kingdom, situated in the north-east of the island of Ireland, that is variously described as a country, province or region. North ...
. The
Belfast International Airport Constabulary The Belfast International Airport Constabulary (BIAC) is a small, specialised police force responsible for providing policing to the Belfast International Airport in Aldergrove, Northern Ireland. Officers employed by the force as empowered to ac ...
is a small, armed, specialised police force responsible for policing Belfast International Airport, Northern Ireland.


United States

In the
United States The United States of America (U.S.A. or USA), commonly known as the United States (U.S. or US) or America, is a country primarily located in North America. It consists of 50 U.S. state, states, a Washington, D.C., federal district, five ma ...
, the laws concerning peace officers vary widely from federal / state / city. Each
tate legislature Tate is an institution that houses, in a network of four art galleries, the United Kingdom's national collection of British art, and international modern and contemporary art. It is not a government institution, but its main sponsor is the U ...
with approval from the governor has the ability to modify the powers of peace officers in their state through legislation.


Federal

Most, if not all, of the
federal government A federation (also known as a federal state) is a political entity characterized by a union of partially self-governing provinces, states, or other regions under a central federal government (federalism). In a federation, the self-govern ...
's uniformed police officers are security police who primarily serve to protect federal property and personnel. An example is the Federal Protective Service who protect federal buildings.


By states

Some major cities such as Washington, D.C.,
Los Angeles Los Angeles ( ; es, Los Ángeles, link=no , ), often referred to by its initials L.A., is the largest city in the state of California and the second most populous city in the United States after New York City, as well as one of the wor ...
,
San Francisco San Francisco (; Spanish language, Spanish for "Francis of Assisi, Saint Francis"), officially the City and County of San Francisco, is the commercial, financial, and cultural center of Northern California. The city proper is the List of Ca ...
and
Boston Boston (), officially the City of Boston, is the capital city, state capital and List of municipalities in Massachusetts, most populous city of the Commonwealth (U.S. state), Commonwealth of Massachusetts, as well as the cultural and financ ...
, MA have a security police service separate from their city police. These may be employees of a public agency or private contractors.


=California

= The complexity of special policing and special police authority is illustrated by these examples, which are not meant to be exhaustive. In California, peace officer powers are granted by the
California Penal Code The Penal Code of California forms the basis for the application of most criminal law, criminal procedure, penal institutions, and the execution of sentences, among other things, in the American state of California. It was originally enacted ...
under a number of different code sections. Cities, counties and special districts are authorized to form their own law enforcement agencies. Peace officer training is regulated by a state agency, Peace Officer Standards and Training or ''POST''. This training can consist of as little as a 40-hour PC 832 course (for
park ranger A ranger, park ranger, park warden, or forest ranger is a law enforcement person entrusted with protecting and preserving parklands – national, state, provincial, or local parks. Description "Parks" may be broadly defined by some systems in th ...
s, probation officers or fire investigators who might make an arrest in the course of their duties), or as much as a 700-hour POST Basic Academy (for entry level peace officers). Security guards (including off duty peace officers) may only carry firearms in private employment if licensed by the state licensing authority, the Bureau of Security and Investigative Services. Persons regularly employed by public agencies as security guards, however, may be exempt from BSIS regulation, if they have completed POST-certified training in accordance with PC 832 or other penal code sections. However, security guards employed by a private employer are still regulated by BSIS even though the client may be a public agency.


Orange County

Orange County Sheriff's Department special officers are duly appointed and dedicated California public officers under California Penal Code section 831.4. (a) (1), who provide citation enforcement and security services for the department in connection with the county bus system,
airport An airport is an aerodrome with extended facilities, mostly for commercial air transport. Airports usually consists of a landing area, which comprises an aerially accessible open space including at least one operationally active surfa ...
, the operations of the local courts and the custody of local prisoners. These sheriff's special officers attend a 16-week training academy at the Orange County Sheriff's Regional Training Academy that instructs new officers on laws of arrest, firearms training, arrest and control techniques, physical fitness, field and patrol tactics, first responder medical training, and corrections-custody training. Being duly non-sworn California public officers, Orange County Sheriff's special officers maintain public officer authority while on duty


Los Angeles

In the
Los Angeles Los Angeles ( ; es, Los Ángeles, link=no , ), often referred to by its initials L.A., is the largest city in the state of California and the second most populous city in the United States after New York City, as well as one of the wor ...
metropolitan area, there are numerous examples of security police with different levels of authority and responsibility. *
Los Angeles County Sheriff's Department The Los Angeles County Sheriff's Department (LASD), officially the County of Los Angeles Sheriff's Department, is a law enforcement agency serving Los Angeles County, California. LASD is the largest sheriff's department in the United States a ...
- employs Security assistants (security officer I) and Security officers (security officer II) who assist deputy sheriffs in the protection of various county government facilities. The LASD absorbed the
Los Angeles County Office of Public Safety The Los Angeles County Office of Public Safety (LACOPS), less formally known as the Los Angeles County Police, was a police agency for the County of Los Angeles. It was formed in 1998 by consolidating three Los Angeles County law enforcement a ...
Police on June 30, 2010. ** Security assistants are assigned to the Transit Services Bureau serve as fare inspectors. Security assistants and security officers assigned to the Court Services Division provide weapons screening and general security of the county's superior and municipal courts. Security officers assigned to the Community College Division provide campus security to the county's community colleges. Additionally, security officers may also be assigned to provide security at other county facilities. ** Sheriff's security officers in compliance with applicable laws and regulations, such as peace officer ("POST") training, have limited peace officer powers while on duty and are outside the authority of the state
security guard A security guard (also known as a security inspector, security officer, or protective agent) is a person employed by a government or private party to protect the employing party's assets (property, people, equipment, money, etc.) from a variety ...
licensing agency, the Bureau of Security and Investigative Services (BSIS) with respect to their work for the county. *
Los Angeles County Metropolitan Transportation Authority The Los Angeles County Metropolitan Transportation Authority (LACMTA), commonly branded as Metro, LA Metro, and L.A. Metro, is the state agency that plans, operates, and coordinates funding for most of the transportation system in Los Angeles ...
- transit security officers are uniformed, 836.5 (a) PC public officers, who serve the MTA (Metro) by providing security for critical transportation infrastructure and internal revenue protection. Transit security officers undergo a selection process that is similar to that for police (including an identical background investigation, as well as a psychological review and physical agility test), as well as an 800-hour internal training program and POST-certified arrest and firearms course.


=New Orleans

= The City of New Orleans Department of Police in accordance with New Orleans Home Rule Charter section 4-502 (2) (a) (b) and New Orleans Municipal Code 17-271 MCS 90–86, deputizes armed security officers, private investigators, college campus police, city, state, and federal agencies, within the city limits, with limited police powers as New Orleans Police special officers. New Orleans Municipal Code 17-271 MCS 30-1122 states that it shall be unlawful for any person to act as an armed guard unless they are a peace officer. Louisiana R.S. 40:1379.1 (b) states that the special officer, when performing those tasks requiring a special officer's commission, shall have the same powers and duties as a peace officer. Special officers may make arrests for felony or misdemeanor offenses on the property or area they are to protect, patrol, or in relation to their direct assignment. The special officer, when making an arrest, may pat down the arrested subject for weapons. Special officers are to turn over arrested subjects and pertaining evidence to a New Orleans Police officer. Special officers are to honor all subpoenas on arrest made and appear in court to testify. Special officers, when not on a particular assignment, are regarded as private citizens and have no police powers. However, special officers still may make arrests for a felony, whether in or out of their presence, while not on a particular assignment, under Louisiana Law CCRP art.214 arrest by private person; when lawful.


Venezuela

The Internal Security Division is a security police unit of the Bolivarian Service of National Intelligence. Dressed with black berets and armed with M16s and M4s. This unit provides security at counterintelligence territorial bases and other facilities. They have police powers.


Obsolete uses


Nazi Germany

* The '' Sicherheitspolizei'', often abbreviated as SiPo, was a term used in Nazi Germany to describe the state political and criminal investigation security agencies. It was made up by the combined forces of the ''
Gestapo The (), abbreviated Gestapo (; ), was the official secret police of Nazi Germany and in German-occupied Europe. The force was created by Hermann Göring in 1933 by combining the various political police agencies of Prussia into one or ...
'' (secret state police) and the '' Kripo'' (criminal police) between 1936 and 1939. As a formal agency, the SiPo was folded into the RSHA in 1939, but the term continued to be used informally until the end of the
Third Reich Nazi Germany (lit. "National Socialist State"), ' (lit. "Nazi State") for short; also ' (lit. "National Socialist Germany") (officially known as the German Reich from 1933 until 1943, and the Greater German Reich from 1943 to 1945) was ...
. * The '' Reichssicherheitsdienst'' (RSD) was the security police assigned to protect dignitaries.


United States

* ''Security police'' is a term once used for the United States Air Force Security Forces, who function as the
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 (tactical), ...
of the
United States Air Force The United States Air Force (USAF) is the air service branch of the United States Armed Forces, and is one of the eight uniformed services of the United States. Originally created on 1 August 1907, as a part of the United States Army S ...
.


See also

*
Police 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 a ...
* Border guard * Bouncer * Traffic guard *
Police officer A police officer (also called a policeman and, less commonly, a policewoman) is a warranted law employee of a police force. In most countries, "police officer" is a generic term not specifying a particular rank. In some, the use of the ...
*
Security guard A security guard (also known as a security inspector, security officer, or protective agent) is a person employed by a government or private party to protect the employing party's assets (property, people, equipment, money, etc.) from a variety ...
* List of protective service agencies ** Provost * United States Air Force Security Forces


Citations


General references

* "A NEW MEMBER OF THE LASD FAMILY" by John Herrera, Star News, September 2006
''The Privatization of Police in America
An Analysis and Case Study''. McFarland & Company, 2003.


External links


History of the Los Angeles County MTA Police
{{types of law enforcement agencies Crime prevention Law enforcement units Security