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 weapons such as knives and firearms with live ammunition . It is often understood that unintended or incidental casualties are risked wherever force is applied, however non-lethal weapons minimise the risk of casualties (e.g. serious/permanent injuries or death) as much as possible. Non-lethal weapons are used in policing and combat 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. However, these weapons occasionally cause serious injuries or death due to allergic reactions, improper use and/or other factors; for this reason 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 .
51-493: 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 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
102-424: A muscle spasm or other reaction to briefly render a violent suspect immobile. It still can cause serious injury and death. The shotgun round is inaccurate over about 6 metres (20 ft) and has a maximum range of around 20 metres (70 ft). Changes to the bean bag round since its inception in the early 1970s have included a velocity reduction from 120 to 90 meters per second (400 to 300 ft/s) as well as
153-604: 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 cannons and fire trucks 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
204-469: A counter UAV pulsed energy projectile. An active denial system (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. The ADS is a non-lethal, directed-energy weapon developed by the US military , designed for area denial, perimeter security and crowd control. Informally,
255-477: A disorienting effect when used during combat or interrogation. During the 2002 Moscow theater hostage crisis , Russian special forces used an unidentified gas (thought to be 3-methylfentanyl or another fentanyl 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
306-415: 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 but no lasting damage. The skin temperature of a person subjected to this weapon can jump to approximately 130 °F (54 °C) in as little as 2 seconds depending on the skin's starting temperature. The system
357-483: A market in self-defense 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
408-485: A non-lethal device which was profiled in the 2002 TIME magazine article "Beyond the Rubber Bullet". It is an electrolaser using ultraviolet laser 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
459-532: 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. Malodorants produce strong odours that cause people to leave the affected area. In 2008, the Israeli Defence Forces began using Skunk for crowd control. It
510-437: A pressure wave designed to stun the target and knock them off their feet, and electromagnetic radiation that affects nerve cells causing a painful sensation. The pulsed energy projectile is intended for riot control 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
561-744: A range of missions across the force continuum . They may also be used by military police , by United Nations forces, and by occupation forces for peacekeeping 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 's 1st Marine Expeditionary Force in Somalia in 1995). Similar weapons, tactics, techniques and procedures are employed by police forces domestically in riot control , prisoner control, crowd control , refugee control, and self-defense , where
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#1732772159819612-440: 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
663-543: 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 and baton use. In the 1980s and 1990s officers began deploying non-lethal personal sidearms such as pepper sprays , and eventually electroshock weapons such as tasers , which were developed for use by police and also found
714-405: A shift from a square shape to a more rounded sock-shaped projectile. Shotguns dedicated to being used for bean bag rounds are often visibly modified with either yellow or green markings, or bright orange stocks and stops, to reduce the possibility that a user might inadvertently load lethal munitions into the weapon. Bean bag rounds are used when a person is a danger to themselves or others but
765-459: A small fabric "pillow" filled with #9 lead shot weighing about 40 grams (1.4 oz). It is fired from a normal 12-gauge shotgun . When fired, the bag is expelled at around 70 to 90 metres per second (230 to 300 ft/s); it spreads out in flight and distributes its impact over about 6 square centimetres (1 sq in) of the target. It is designed to deliver a blow that will cause minimum long-term trauma and no penetration but will result in
816-438: A tactic to avoid pursuit after ambushes. In current usage a riot gun 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
867-681: A target. The rounds rely on the transfer of kinetic energy and blunt force trauma to accomplish this incapacitation. Rubber bullets , rubber buckshot, soft polymer rounds , wax bullets , plastic bullets , beanbag rounds , sponge grenades , ring airfoil projectiles (both kinetic and tear gas projectiles) and rubber bullets with electroshock effect (e.g. Taser 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 rounds . More recently, high-velocity paintball guns are also used to launch less-lethal rounds, including
918-498: 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
969-505: 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. The active ingredient in pepper spray is oleoresin capsicum (OC), an acrid irritant chemical derived from cayenne pepper plants. A 1998 estimate by the International Association of Chiefs of Police suggested at least 113 pepper spray-related fatalities had occurred in
1020-402: Is filled with liquid or powdered capsaicin , 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
1071-893: 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. 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
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#17327721598191122-521: Is most commonly found in 12 gauge (18.5 mm/.729 inch) shotguns and 37mm (1.46 inch) or 40mm (1.57 inch) grenade launchers. In the United States, the term riot gun more commonly refers to a riot shotgun . Electroshock weapons 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
1173-707: 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 as of 2002 . In 2010,
1224-458: Is not a direct threat in such a manner that deadly force would be appropriate – typically a suicidal individual with a bladed weapon . The round is intended to disable the person without killing them. A bean bag round can severely injure or kill in a wide variety of ways. They have caused around one death a year since their introduction in the US. A round can hit the chest, break the ribs and send
1275-740: The FN 303 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. Hand grenades 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
1326-709: The IHH against the IDF soldiers during the Gaza flotilla raid at the beginning of the IDF storming of the Mavi Marmara . 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
1377-613: The Joint Non-Lethal Weapons Directorate Non-Lethal Weapons Reference Book was created. The weapons in this book are currently in development. 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
1428-654: The 1980s the development of high-tensile plastics like Kevlar and Lexan revolutionized personal armor 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 and offensive-odor canisters, and non-lethal impact rounds such as rubber bullets and "bean bag" flexible baton rounds , riot tactics were modified to rely less on violent response to attacking rioters than on
1479-677: 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. Blister agents , including CR gas , are less often used riot control agents. Other irritants include CS gas and nonivamide (PAVA). Sticky foam
1530-629: 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 , part of the Air Force Research Laboratory Directed Energy Directorate in New Mexico . Non-lethal force Non-lethal weapons may be used by conventional military in
1581-780: 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 . The Southern California chapter of the American Civil Liberties Union recommends against maximal prone restraint techniques following pepper spray application, and they caution that anyone sprayed should be monitored to ensure effective breathing. The use of chemical weapons such as tear gas ( 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
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1632-435: 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
1683-810: The brand name " Taser ", 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 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 weapons ) and microwave weapons, particle beam weapons , sonic weapons and plasma weapons . HSV Technologies, Inc. (named for its founders, Herr, Schlesinger and Vernon; not to be confused with Holden Special Vehicles), formerly of San Diego, California , USA, then Port Orchard, WA, designed
1734-439: The broken ribs into the heart. A shot to the head can break the nose, crush the larynx or break the neck or skull of the subject. This is why many officers are taught to aim for the extremities when using a bean bag round. A strike in the abdominal area can cause internal bleeding or strike the celiac plexus which can disrupt breathing or heartbeat, but such a hit is generally safer than most other areas as well as presenting
1785-470: 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. 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
1836-644: The chemicals during training. Journalist Rubén Salazar 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 weapons are psychoactive drugs, such as BZ , LSD , Kolokol-1 , EA-3167 , and 3-Methylamphetamine designed to have
1887-494: 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
1938-415: The company appears to have been dissolved, with their website defunct as of September 2017. Pulsed energy projectiles or (PEP) is a technology of non-lethal directed energy weaponry currently under development by the US military . It involves the emission of an invisible laser pulse which, upon contact with the target, ablates the surface and creates a small amount of exploding plasma . This produces
1989-613: The crowd overwhelmed the police. In March stun grenades were used by Belarusian police in Minsk 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. Water cannons are commonly used in crowd and riot control, for dispersal or to prevent movement on
2040-428: 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 , which is stocked by hospitals and most ambulances. However, because
2091-552: 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 revealed its development of a less-than-lethal energy weapon called the Active Denial System ,
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2142-539: The hijacked Sabena Flight 571 , allowing the Israeli forces headed by Ehud Barak 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
2193-602: The late 1980s and early 1990s, the Non-lethality Policy Review Group at U.S. Global Strategy Council in Washington and other independent think tanks 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
2244-539: The late Middle Ages onward. Caltrops are still sometimes used in modern conflicts, such as during the Korean War , 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 and Montoneros called them "miguelitos" and used these as
2295-449: The relative safety of such weapons are usually contingent on their being used "properly". For example, the rubber bullets 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. Non-lethal rounds are firearm rounds which are designed to incapacitate, but not kill ,
2346-462: The terminology of "less-than-lethal" is often used. 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 riots were able to use only batons or similar club-like weapons, or bayonet or sword charges, or fire live ammunition at crowds. In
2397-546: The use of small caltrops have been a feature of anti- infantry warfare for centuries. 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
2448-408: The weapon has also been referred to as a "heat ray", since it works by heating the surface of targets, such as the skin of targeted human subjects. Bean bag 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. The bean bag round typically consists of
2499-462: 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 . A specialized paintball, called a "pepperball",
2550-571: Was developed by Mission Research Corporation (now owned by Orbital ATK ). It uses a chemical deuterium fluoride laser device producing infrared laser pulses. The plasma (produced by the early part of the pulse) explodes because its electrons 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
2601-635: 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 weapons work by either incapacitating or deterring the enemy. 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. Simple rows or clusters of sharpened sticks (also known as punji sticks ), and
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