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Special Amphibious Reconnaissance Corpsman
A Special Amphibious Reconnaissance Corpsman (SARC) is a United States Navy hospital corpsman who provides MARSOC and other USSOCOM units advanced trauma management associated with combatant diving and parachute entry. Traditionally, they are attached to the Marine Corps Force Reconnaissance companies to help support the Command Element of the Marine Air-Ground Task Force in special reconnaissance missions. Mission SARCs are trained and specialized in the same aspects of special operations as their counterparts: amphibious entry, deep recon and direct action. They are also capable of conducting detailed underwater ship-bottom searches. During operational status, the teams will then be dispersed evenly throughout the Marine Recon platoons; usually one SARC per platoon. SARCs have regularly acted as a point man, sharp shooter, radio operator, or even the team leader in the Marine Recon teams/platoons. More recently, SARCs are being deployed with Marine Special Operations ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
United States Navy
The United States Navy (USN) is the naval warfare, maritime military branch, service branch of the United States Department of Defense. It is the world's most powerful navy with the largest Displacement (ship), displacement, at 4.5 million tons in 2021. It has the world's largest aircraft carrier fleet, with List of aircraft carriers in service, eleven in service, one undergoing trials, two new carriers under construction, and six other carriers planned as of 2024. With 336,978 personnel on active duty and 101,583 in the Ready Reserve, the U.S. Navy is the third largest of the United States military service branches in terms of personnel. It has 299 deployable combat vessels and about 4,012 operational aircraft as of 18 July 2023. The U.S. Navy is one of six United States Armed Forces, armed forces of the United States and one of eight uniformed services of the United States. The United States Navy traces its origins to the Continental Navy, which was established during ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Deep Reconnaissance
A long-range reconnaissance patrol, or LRRP, is a small, well-armed reconnaissance team that patrols deep into enemy-held territory.Ankony, Robert C., ''Lurps: A Ranger's Diary of Tet, Khe Sanh, A Shau, and Quang Tri,'' revised ed., Rowman & Littlefield Publishing Group, Lanham, MD (2009)/ref> The concept of scouts dates back to the origins of warfare itself. However, in modern times these specialized units evolved from examples such as Rogers' Rangers in colonial British America, the Lovat Scouts in World War One, the Long Range Desert Group and the Special Air Service in the Western Desert Campaign and North West Europe, similar units such as Force 136 in East Asia, and the special Finnish light infantry units during the Second World War. Postwar, the role was carried in various North Atlantic Treaty Organization (NATO) and British Commonwealth countries by units that could trace their origins to these wartime creations such as the British SAS, Australia's Special Air Ser ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Phlogiston Theory
The phlogiston theory, a superseded scientific theory, postulated the existence of a fire-like element dubbed phlogiston () contained within combustible bodies and released during combustion. The name comes from the Ancient Greek (''burning up''), from (''flame''). The idea of a substance was first proposed in 1667 by Johann Joachim Becher and later put together more formally in 1697 by Georg Ernst Stahl. Phlogiston theory attempted to explain chemical processes such as combustion and rusting, now collectively known as oxidation. The theory was challenged by the concomitant mass increase and was abandoned before the end of the 18th century following experiments by Antoine Lavoisier in the 1770s and by other scientists. Phlogiston theory led to experiments that ultimately resulted in the identification (), and naming (1777), of oxygen by Joseph Priestley and Antoine Lavoisier, respectively. Theory Phlogiston theory states that ''phlogisticated'' substances contain phlo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Breathing Gas
A breathing gas is a mixture of gaseous chemical elements and compounds used for respiration. Air is the most common and only natural breathing gas, but other mixtures of gases, or pure oxygen, are also used in breathing equipment and enclosed habitats. Oxygen is the essential component for any breathing gas. Breathing gases for hyperbaric use have been developed to improve on the performance of ordinary air by reducing the risk of decompression sickness, reducing the duration of decompression, reducing nitrogen narcosis or reducing work of breathing and allowing safer deep diving. Description A breathing gas is a mixture of gaseous chemical elements and compounds used for respiration. Air is the most common and only natural breathing gas. Other mixtures of gases, or pure oxygen, are also used in breathing equipment and enclosed habitats such as scuba equipment, surface supplied diving equipment, recompression chambers, high-altitude mountaineering, high-flying aircraf ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Diving Physics
Diving physics, or the physics of underwater diving, is the basic aspects of physics which describe the effects of the underwater environment on the underwater diver and their equipment, and the effects of blending, compressing, and storing breathing gas mixtures, and supplying them for use at ambient pressure. These effects are mostly consequences of immersion in water, the hydrostatic pressure of depth and the effects of pressure and temperature on breathing gases. An understanding of the physics behind is useful when considering the physiological effects of diving, breathing gas planning and management, diver buoyancy control and trim, and the hazards and risks of diving. Changes in density of breathing gas affect the ability of the diver to breathe effectively, and variations in partial pressure of breathing gas constituents have profound effects on the health and ability to function underwater of the diver. Aspects of physics with particular relevance to diving The mai ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hyperbaric Medicine
Hyperbaric medicine is medical treatment in which an increase in barometric pressure of typically air or oxygen is used. The immediate effects include reducing the size of gas emboli and raising the partial pressures of the gases present. Initial uses were in decompression sickness, and it also effective in certain cases of gas gangrene and carbon monoxide poisoning. There are potential hazards. Injury can occur at pressures as low as 2 psig (13.8 kPa) if a person is rapidly decompressed. If oxygen is used in the hyperbaric therapy, this can increase the fire hazard. Hyperbaric oxygen therapy (HBOT), is the medical use of greater than 99% oxygen at an ambient pressure higher than atmospheric pressure, and therapeutic recompression. The equipment required consists of a pressure vessel for human occupancy ( hyperbaric chamber), which may be of rigid or flexible construction, and a means of a controlled atmosphere supply. Treatment gas may be the ambient chamber gas, or delivered ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Naval Special Warfare Development Group
The Naval Special Warfare Development Group (NSWDG), abbreviated as DEVGRU ("Development Group") and unofficially known as SEAL Team Six, is the United States Navy component of the Joint Special Operations Command (JSOC). The unit is often referred to within JSOC as Task Force Blue. DEVGRU is administratively supported by the Naval Special Warfare Command and operationally commanded by JSOC. Most information concerning DEVGRU is designated as classified, and details of its activities are not usually commented on by either the United States Department of Defense or the White House. Despite the official name changes and increase in size, "SEAL Team Six" remains the unit's widely recognized moniker. DEVGRU (along with its Army and Air Force counterparts, Delta Force, Intelligence Support Activity, the 75th Ranger Regiment's Regimental Reconnaissance Company and 24th Special Tactics Squadron), are the U.S. military's primary Tier 1 special mission units tasked with perf ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Naval Special Warfare
The United States Naval Special Warfare Command (USNSWC), also known as NAVSPECWARCOM and WARCOM, is the naval component of United States Special Operations Command, the unified command that oversees and conducts the nation's special operations and missions. Originating in the unconventional naval units formed during World War II, WARCOM was established on 16 April 1987 at Naval Amphibious Base Coronado in San Diego, California. Its mission is to provide leadership, doctrinal guidance, resources, and oversight to special operations carried out in maritime and littoral environments. WARCOM specializes in a broad range of tactical areas, including unconventional warfare, direct action, counterterrorism, special reconnaissance, and personnel recovery. WARCOM is organized primarily around eight Navy SEAL teams, three special boat teams, and various supporting commands, totaling about 9,200 personnel. Units can operate independently, as part of carrier battle groups and amphi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Marine Special Operations Command
United States Marine Forces Special Operations Command (MARSOC) is a component command of the United States Special Operations Command (SOCOM) that comprises the Marine Corps' contribution to SOCOM, originating from Marine Force Recon (FORECON). Its core capabilities are direct action, special reconnaissance and foreign internal defense. MARSOC has also been directed to conduct counter-terrorism and information operations. History and lineage Its creation was announced on 1 November 2005 by U.S. Secretary of Defense Donald Rumsfeld, following a meeting between him, the SOCOM commander General Bryan D. Brown, and the Marine Corps Commandant General Michael Hagee on 28 October 2005. MARSOC was officially activated on 24 February 2006 with ceremonies at Camp Lejeune, North Carolina. The potential participation of the Marine Corps in SOCOM has been controversial since SOCOM was formed in 1986. At the time, Marine Corps leaders felt that their Force Reconnaissance (FORECON) ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Team Leader
A team leader is a person who provides guidance, instruction, direction and leadership to a group of individuals (the team) for the purpose of achieving a key result or group of aligned results. Team leaders serves as the steering wheel for a group of individuals who are working towards the same goal for the organization. Additionally, in a military context, a team leader is the non-commissioned officer in charge of a fireteam. The team leader monitors the quantitative and qualitative achievements of the team and reports results to a manager. The leader often works within the team, as a member, carrying out the same roles but with the additional 'leader' responsibilities – as opposed to higher-level management which often has a separate job role altogether. They may also be considered line management. In order for a team to function successfully, the team leader must also motivate the team to "use their knowledge and skills to achieve the shared goals". When a team leader motiv ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Radio Operator
A radio operator (also, formerly, a wireless operator in British and Commonwealth English) is a person who is responsible for the operations of a radio system and the technicalities in broadcasting. The profession of radio operator has become largely obsolete with the automation of radio-based tasks in recent decades. Nevertheless, radio operators are still employed in maritime and aviation fields. In most cases radio transmission is now only one of several tasks of a radio operator. In the United States, the title of Certified Radio Operator is granted to those who pass a test issued by the Society of Broadcast Engineers. The role of 'Wireless Operator' aboard aircraft during WWII was often abbreviated to 'WOp' or 'WOP' in official documents or obituaries. See also * Wireless telegraphy Wireless telegraphy or radiotelegraphy is the transmission of text messages by radio waves, analogous to electrical telegraphy using electrical cable, cables. Before about 1910, the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Marksman
A marksman is a person who is skilled in precision shooting. In modern military usage this typically refers to the use of projectile weapons such as an accurized telescopic sight, scoped long gun such as designated marksman rifle (or a sniper rifle) to shoot at high-value targets at long range shooting, longer-than-usual ranges. The proficiency in precision shooting is known as a shooter's marksmanship, which can be used to describe both gunnery and archery. Description In common usage, "sharpshooter" and "marksman" are synonymous. Within the specialized fields of shooting sports and military usage, however, sharpshooter and marksman each refer to different levels of skill. Specifically, in the US Army, "marksman" is a rating below "sharpshooter" and "expert". Four levels of skill are generally recognized today in American military and civilian shooting circles: unqualified, marksman, sharpshooter, and expert. Marksmanship Badges (United States), Marksmanship badges for the thr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
