375 Gas chamber, Cbrn Images: NARA & DVIDS Public Domain Archive Public Domain Search

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MCAS Iwakuni Marines participate in annual CBRN training

Lance Cpl. William Kerr, a chemical, biological, radiological and nuclear defense specialist with 1st Marine Aircraft Wing, demonstrates the proper wear of the M50 JSGPM for annual CBRN training on Marine Corps... More

U.S. Marine Corps Lance Cpl. Andrew Stehura, a chemical,

U.S. Marine Corps Lance Cpl. Andrew Stehura, a chemical, biological, radiological, and nuclear defense specialist with Battalion Landing Team 1/4, 15th Marine Expeditionary Unit, burns a non-lethal chlorobenzyl... More

Cpl. Ronald Isaacs, 24, from Bluff City, Tenn., a chemical,

Cpl. Ronald Isaacs, 24, from Bluff City, Tenn., a chemical, biological, radiological, nuclear defense chief with 9th Communication Battalion, I Marine Expeditionary Force, gives I MEF Marines a safety brief bef... More

Army paratroopers assigned to Mercury Company, 6th

Army paratroopers assigned to Mercury Company, 6th Brigade Engineer Battalion (Airborne), 4th Infantry Brigade Combat Team (Airborne), 25th Infantry Division, U.S. Army Alaska, are exposed to non-lethal CS gas ... More

U.S. Army Staff Sgt. Dwight Harris, right, a chemical,

U.S. Army Staff Sgt. Dwight Harris, right, a chemical, biological, radiological and nuclear specialist from Ocala, Fla., assigned to Charlie Company, 307th Expeditionary Signal Battalion, checks that Pfc. Nsilo... More

Soldiers from B Company, 3rd Battalion (Airborne),

Soldiers from B Company, 3rd Battalion (Airborne), 509th Infantry Regiment, are silhouetted in the Alaskan sun as they transition on the record fire range during nuclear, biological, and chemical training at th... More

Sgt. Carlos Iruegas, U.S. Marine Corps Forces, Pacific

Sgt. Carlos Iruegas, U.S. Marine Corps Forces, Pacific chemical, biological, radiological and nuclear defense chief, pauses in the gas chamber before preparing CS gas (tear gas) aboard Marine Corps Base Hawaii ... More

A Marine with the 22nd Marine Expeditionary Unit breaks

A Marine with the 22nd Marine Expeditionary Unit breaks a chlorobenzylidene malonitrite tablet during an Individual Protective Equipment Confidence exercise at the gas chamber at Camp Lejeune, N.C., July 12, 20... More

Cpl. Ronald Isaacs, 24, from Bluff City, Tenn., a chemical,

Cpl. Ronald Isaacs, 24, from Bluff City, Tenn., a chemical, biological, radiological, nuclear defense chief with 9th Communication Battalion, I Marine Expeditionary Force, instructs a group of Marines prior to ... More

U.S. Army Reserve Soldiers from the 317th Military

U.S. Army Reserve Soldiers from the 317th Military Police Battalion participate in a gas mask familiarization class during annual training exercise Centurion Focus on Fort Stewart, Georgia, July 21, 2018. The 3... More

U.S. Army Pfc. Tyler Habenicht, a paratrooper assigned

U.S. Army Pfc. Tyler Habenicht, a paratrooper assigned to Mercury Company, 6th Brigade Engineer Battalion (Airborne), 4th Infantry Brigade Combat Team (Airborne), 25th Infantry Division, U.S. Army Alaska, dons ... More

Spc. Jonathan Reisz, a U.S. Army Reserve military police

Spc. Jonathan Reisz, a U.S. Army Reserve military police Soldier from the 317th Military Police Battalion, Headquarters and Headquarters Detachment, stands in the shade during annual training exercise Centurion... More

Spc. Colin Watts, B Company, 3rd Battalion (Airborne),

Spc. Colin Watts, B Company, 3rd Battalion (Airborne), 509th Infantry Regiment, engages a 50-meter target during nuclear, biological, and chemical training at the Small Arms Complex, June 17, 2013. Qualifying w... More

Capt. Porfirio Laboy and Capt. Brian Ludstrum, U.S.

Capt. Porfirio Laboy and Capt. Brian Ludstrum, U.S. Army Reserve military police officers from the 317th Military Police Battalion, Headquarters and Headquarters Detachment, reassemble a M40 field protective ma... More

Spc. William Luckman, center, C Company, 3rd Battalion

Spc. William Luckman, center, C Company, 3rd Battalion (Airborne), 509th Infantry Regiment, explains the various components, maintenance, and proper wear of the M40A1 protective mask as the unit prepare to ent... More

U.S. Marine Corps Chemical, biological, radiological,

U.S. Marine Corps Chemical, biological, radiological, and nuclear defense specialists with 15th Marine Expeditionary Unit, conduct a non-lethal gas chamber qualification at Marine Corps Base Camp Pendleton, Cal... More

U.S. Army Sgt. 1st Class Kenneth Goins, a paratrooper

U.S. Army Sgt. 1st Class Kenneth Goins, a paratrooper assigned to the 6th Brigade Engineer Battalion (Airborne), 4th Infantry Brigade Combat Team (Airborne), 25th Infantry Division, U.S. Army Alaska, vaporizes ... More

U.S. Marine Corps Sgt. Jamarkus English, left, a Marine

U.S. Marine Corps Sgt. Jamarkus English, left, a Marine Air-Ground Task Force planner with 2nd Marine Logistics Group, makes adjustments to the gas mask of Cpl. Ronny Martinez- Martinez, an administrative speci... More

Spc. Cody Baugher, a U.S. Army Reserve military police

Spc. Cody Baugher, a U.S. Army Reserve military police Soldier from the 443rd Military Police Company, fires a M320 grenade launcher during annual training exercise Centurion Focus on Fort Stewart, Georgia, Jul... More

A Soldier from the 620th Movement Control Team removes

A Soldier from the 620th Movement Control Team removes his protective mask and reacts to exposure to CS gas at a Fort Drum training site on Monday, August 20. The Soldiers were briefly exposed to the gas in ord... More

U.S. Marine Corps Cpl. Jaden L. Graham (center), the

U.S. Marine Corps Cpl. Jaden L. Graham (center), the Chemical, Biological, Radiological and Nuclear (CBRN) Defense non-commissioned officer in charge for Marine Aircraft Group (MAG) 36, leads Marines into a gas... More

A Soldier assigned to the 2nd Infantry Brigade Combat

A Soldier assigned to the 2nd Infantry Brigade Combat Team, 4th Infantry Division, breaks the seal of his mask, Feb. 6, 2019, during a gas mask confidence training at the gas chamber on Fort Carson, Colorado. (... More

U.S. Marine Corps Cpl. Jaden L. Graham (right), the

U.S. Marine Corps Cpl. Jaden L. Graham (right), the Chemical, Biological, Radiological and Nuclear (CBRN) Defense non-commissioned officer in charge for Marine Aircraft Group (MAG) 36, guides Marines leaving th... More

U.S. Marine Corps Cpl. Hailey Roof, chemical, biological,

U.S. Marine Corps Cpl. Hailey Roof, chemical, biological, radiological, and nuclear (CBRN) defense specialist, 26th Marine Expeditionary Unit, instructs Marines during CBRN defense training at Camp Lejeune, Nor... More

U.S. Marine Corps Sgt. Mitchell A. Jackson, right,

U.S. Marine Corps Sgt. Mitchell A. Jackson, right, and Staff Sgt. Craig R. Young, both explosive ordnance disposal technicians with Combat Logistics Battalion 26, 26th Marine Expeditionary Unit (MEU), simulate ... More

Staff Sgt. Christopher Moen, the chemical, biological,

Staff Sgt. Christopher Moen, the chemical, biological, radiological and nuclear (CBRN) staff non-commissioned officer-in-charge ensures each Marines gas mask is in working order before training begins during Ma... More

A group of soldiers assigned to the 123rd Brigade Support

A group of soldiers assigned to the 123rd Brigade Support Battalion, 4th Brigade Combat Team, 1st Armored Division, struggle against the effects of CS gas as they flap their arms Oct. 18, 2012 during the battal... More

Army paratroopers assigned to Mercury Company, 6th

U.S. Marines with Headquarters Regiment, 2nd Marine

U.S. Marines with Headquarters Regiment, 2nd Marine Logistics Group, conduct annual training at the Headquarters Regiment gas chamber on Camp Lejeune, N.C., Feb. 10, 2016. Marines attended training in order to ... More

A Marine with the 24th Marine Expeditionary Unit breaks

A Marine with the 24th Marine Expeditionary Unit breaks the seal of his M50 Joint Service General Purpose Mask during the Individual Protective Equipment Confidence Exercise on Camp Lejeune, North Carolina, Feb... More

Spc. Kurt Branstetter, B Company, 3rd Battalion (Airborne),

Spc. Kurt Branstetter, B Company, 3rd Battalion (Airborne), 509th Infantry Regiment, performs squats after entering the Arctic Nuclear, Biological, and Chemical Chamber, June 17, 2013. The soldiers conducted nu... More

Marines with 1st Reconnaissance Battalion, 1st Marine

Marines with 1st Reconnaissance Battalion, 1st Marine Division, line up and enter the gas chamber during chemical, biological, radiological and nuclear training at Camp Pendleton, Calif., Sept. 22, 2016. Marine... More

U.S. Army Pfc. Quintin L. Beck, assigned to Charlie

U.S. Army Pfc. Quintin L. Beck, assigned to Charlie Company, 307th Expeditionary Signal Battalion, checks that his M40 field protective mask is functioning properly while conducting chemical, biological, radiol... More

U.S. Marines with Marine Aviation Logistics Squadron

U.S. Marines with Marine Aviation Logistics Squadron 12 attend a Chemical Biological Radiological and Nuclear (CBRN) class during exercise Blue Inu 19 at Marine Corps Air Station Iwakuni, Jan. 10, 2019. Marines... More

From left, U.S. Marine Sgt. Zachary Palmer and U.S.

From left, U.S. Marine Sgt. Zachary Palmer and U.S. Marine Lance Cpl. James Langford with Headquarters Battalion, 3rd Marine Division, demonstrate how to properly fit an M50 Gas Mask before a gas chamber traini... More

U.S. Air Force Staff Sgt. Brian Tripp, an Emergency

U.S. Air Force Staff Sgt. Brian Tripp, an Emergency Management noncommissioned officer with the 633rd Civil Engineer Squadron Emergency Management flight, prepares CS gas, commonly referred to as tear gas, in a... More

Sgt. Carlos Iruegas, U.S. Marine Corps Forces, Pacific

Sgt. Carlos Iruegas, U.S. Marine Corps Forces, Pacific chemical, biological, radiological and nuclear defense chief, prepares the CS gas (tear gas) at the gas chamber aboard Marine Corps Base Hawaii March 19, 2... More

Marines and Sailors with Special Purpose Marine Air-Ground

Marines and Sailors with Special Purpose Marine Air-Ground Task Force - Southern Command prepare to lift their gas masks while conducting gas chamber training at Marine Corps Base Camp Lejeune, North Carolina, ... More

A U.S. Marine Corps Forces, Pacific Marine clears his

A U.S. Marine Corps Forces, Pacific Marine clears his gas mask during annual chemical, biological, radiological and nuclear defense training at Marine Corps Base Hawaii March 19, 2015. The training covered prop... More

U.S. Marines stationed at Marine Corps Air Station

U.S. Marines stationed at Marine Corps Air Station (MCAS) Yuma, conduct their annual Chemical, Biological, Radiological and Nuclear Defense (CBRN) Training at the MCAS Yuma Gas Chamber July 26, 2018. The gas ch... More

After spending nearly five minutes inside the Tobin

After spending nearly five minutes inside the Tobin Wells gas chamber, soldiers from the 123rd Brigade Support Battalion, 4th Brigade Combat Team, 1st Armored Division, exited the confined space singing the “Ir... More

Pfc. Luke Kramer, a chemical, biological, radiological,

Pfc. Luke Kramer, a chemical, biological, radiological, nuclear defense specialist with 2nd Light Armored Reconnaissance Battalion, prepares CS gas at Marine Corps Base Camp Lejeune, North Carolina, March 16, 2... More

Marines await instructions in a gas chamber at Camp

Marines await instructions in a gas chamber at Camp Lejeune, N.C. March 14, 2017. 2nd Supply Battalion conducted gas chamber training to ensure that Marines are capable of defending themselves in case of a chem... More

U.S. Marine Corps Pfc. John Thies, an anti-tank missileman

U.S. Marine Corps Pfc. John Thies, an anti-tank missileman with 2d Light Armored Reconnaissance Battalion, 2d Marine Division, participates in an Individual Protective Equipment Confidence Exercise on Camp Leje... More

U.S. Army Spc. Nadia M. Pedican, 2nd right, assigned

U.S. Army Spc. Nadia M. Pedican, 2nd right, assigned to Charlie Company, 307th Expeditionary Signal Battalion, signals two thumbs up while conducting chemical, biological, radiological and nuclear sustainment t... More

Marines with Headquarters Battalion prepare to qualify

Marines with Headquarters Battalion prepare to qualify in the confidence chamber at Range 105 aboard Marine Corps Air Ground Combat Center, Twentynine Palms, Calif., Aug. 26, 2016. Marines are required to quali... More

U.S. Marines with 2d Marine Division, prepare to begin

U.S. Marines with 2d Marine Division, prepare to begin an Individual Protective Equipment Confidence Exercise on Camp Lejeune, N.C., Jan. 28, 2021. The Marines rehearse donning and clearing M50 Joint Service Ge... More

The CBRN chamber at Fort Jackson, S.C., is prepared

The CBRN chamber at Fort Jackson, S.C., is prepared for officers at the Chaplain's Basic Officer Leaders Course. The 104th Training Division facilitated the training. (U.S. Army photo by Sgt. 1st Class Brian Hamilton)

Marines receive a class on how to properly wear their

Marines receive a class on how to properly wear their protective gear before entering the gas chamber at Camp Lejeune, N.C. March 14, 2017. 2nd Supply Battalion conducted gas chamber training to ensure that Mar... More

Marines with Headquarters Battalion perform exercises

Marines with Headquarters Battalion perform exercises to ensure their M50 Joint-Service General Purpose Mask are properly sealed before qualifying in the confidence chamber at Range 105 aboard Marine Corps Air ... More

A Marine with 1st Reconnaissance Battalion, 1st Marine

A Marine with 1st Reconnaissance Battalion, 1st Marine Division, participates in chemical, biological, radiological and nuclear training at Camp Pendleton, Calif., Sept. 22, 2016. Marines intentionally break th... More

Gunnery Sgt. Andrew Antunez, an administrative chief

Gunnery Sgt. Andrew Antunez, an administrative chief with the 11th Marine Expeditionary Unit, breaks the seal of his M50 Joint Service General Purpose Mask during a gas chamber qualification at Marine Corps Bas... More

Sgt. Tyree Brown of A Company, 3rd Battalion, 354th

Sgt. Tyree Brown of A Company, 3rd Battalion, 354th Regiment, tells a group of cadets the limits of the chemical, biological, radiological, and neurological defense (CBRN) course at Fort Knox, Ky.

U.S. Soldiers with Headquarters and Headquarters Company,

U.S. Soldiers with Headquarters and Headquarters Company, 1st Air Cavalry Brigade, 1st Cavalry Division, evacuate the gas chamber upon completing the final event during the Chemical, Biological, Radiological, a... More

1st Sgt. James Bell Jr., 504th Military Intelligence

1st Sgt. James Bell Jr., 504th Military Intelligence Brigade, exits the gas chamber, Jan. 16, 2019, Fort Hood, Texas. Soldiers with Headquarters and Headquarters Company all cycled through the gas chamber. (U.S... More

A U.S. Marine with III Marine Expeditionary Force

A U.S. Marine with III Marine Expeditionary Force Information Group exits the gas chamber at Camp Hansen, Okinawa, Japan, Dec. 19, 2018. Marines are required to show their proficiency with a gas mask by breakin... More

Spc. Christopher Hill, a U.S. Army Reserve Soldier

Spc. Christopher Hill, a U.S. Army Reserve Soldier from the 320th Military Police Company, experiences the effects of the gas chamber during the annual training exercise Centurion Focus on Fort Stewart, Georgia... More

Army Pfc. Trevor Holzmeister, B Company, 3rd Battalion

Army Pfc. Trevor Holzmeister, B Company, 3rd Battalion (Airborne), 509th Infantry Regiment, engages downrange targets as the unit conducts nuclear, biological, and chemical training at the Small Arms Complex, J... More

CBRN Training - A group of soldiers standing next to each other

Soldiers with 7th Special Forces Group (Airborne) exit a gas chamber during Chemical, Biological, Radiological, and Nuclear (CBRN) training to ensure the unit is proficient in the use of the M50 Gas Mask on Egl... More

U.S. Marine Corps Master Sgt. Joshua R. Kirchem, a

U.S. Marine Corps Master Sgt. Joshua R. Kirchem, a Marine with the 13th Marine Expeditionary Unit, I Marine Expeditionary Force, adjusts his M61 gas mask before the annual chemical, biological, radiological, an... More

U.S. Marines and Sailors with the 22nd Marine Expeditionary

U.S. Marines and Sailors with the 22nd Marine Expeditionary Unit pose for a photo following an Individual Protective Equipment Confidence training at the gas chamber aboard Camp Lejeune, N.C., Nov. 15, 2019. Th... More

U.S. Marine Cpl. James Boncore, a chemical, biological,

U.S. Marine Cpl. James Boncore, a chemical, biological, radiological and nuclear defense specialist, with 2nd Air Naval Gunfire Liaison Company, II Marine Expeditionary Force Information Group, burns chlorobenz... More

U.S. Marine Corps Master Gunnery Sgt. Joseph Edwards,

U.S. Marine Corps Master Gunnery Sgt. Joseph Edwards, an operations chief with the 22nd Marine Expeditionary Unit, breaks the seal of his M50 gas mask during an Individual Protective Equipment Confidence Exerci... More

Sgt. Tyree Brown of A Company, 3rd Battalion, 354th

Sgt. Tyree Brown of A Company, 3rd Battalion, 354th Regiment, checks a cadet's equipment before they head into the gas chamber filled with CS gas.

A U.S. Army paratrooper assigned to Mercury Company,

A U.S. Army paratrooper assigned to Mercury Company, 6th Brigade Engineer Battalion (Airborne), 4th Infantry Brigade Combat Team (Airborne), 25th Infantry Division, U.S. Army Alaska, observes fellow Soldiers as... More

U.S. Marines with the 26th Marine Expeditionary Unit

U.S. Marines with the 26th Marine Expeditionary Unit complete the gas chamber during Chemical, Biological, Radiological, and Nuclear (CBRN) defense training at Camp Lejeune, North Carolina, Oct. 27, 2020. The g... More

U.S. Marine Corps Cpl. Micheal Hall, right, a chemical,

U.S. Marine Corps Cpl. Micheal Hall, right, a chemical, biological, radiological and nuclear defense specialist, with Weapons and Field Training Battalion, gives a class to recruits prior to gas chamber qualifi... More

Marines with Headquarters Battalion prepare to qualify

Pfc. Mario River and Pfc. Khalesha Gibson, U.S. Army

Pfc. Mario River and Pfc. Khalesha Gibson, U.S. Army Reserve Soldiers from the 320th Military Police Company, experience the effects of the gas chamber during annual training exercise Centurion Focus on Fort St... More

U.S. Marine Corps Cpl. Jaden L. Graham (right), the

U.S. Marine Corps Cpl. Jaden L. Graham (right), the Chemical, Biological, Radiological and Nuclear (CBRN) Defense non-commissioned officer in charge for Marine Aircragt Group (MAG) 36, holds a gas chamber train... More

Army paratroopers assigned to Mercury Company, 6th

Army Pfc. Frederick Luper, left, a paratrooper assigned

Army Pfc. Frederick Luper, left, a paratrooper assigned to Mercury Company, 6th Brigade Engineer Battalion (Airborne), 4th Infantry Brigade Combat Team (Airborne), 25th Infantry Division, U.S. Army Alaska, vapo... More

U.S. Marine Corps Efrain H. GonzalezOrtiz, a chemical,

U.S. Marine Corps Efrain H. GonzalezOrtiz, a chemical, biological, radiological, and nuclear defense specialist with the 26th Marine Expeditionary Unit (MEU), dons a hazardous material suit during assessment an... More

U.S. Army Reserve Soldiers from the 317th Military

U.S. Army Reserve Soldiers from the 317th Military Police Battalion perform maintenance on a Humvee during annual training exercise Centurion Focus on Fort Stewart, Georgia, July 23, 2018. The 317th MP Battalio... More

U.S. Marine Sgt. Byron M. Solano, right, teaches ROK

U.S. Marine Sgt. Byron M. Solano, right, teaches ROK Marines about the U.S. Marines’ chemical, biological, radiological and nuclear defense capabilities during Korean Marine Exchange Program 15-17 Feb. 9 at th... More

Lance Cpl. Stephen Richardson breaks the seal of his

Lance Cpl. Stephen Richardson breaks the seal of his M50 gas mask during chemical, biological, radiological and nuclear defense training at Marine Corps Air Station Cherry Point, N.C., April 2, 2014. During CBR... More

U.S. Marine Lance Cpl. Michael Oustayan breaks capsules

U.S. Marine Lance Cpl. Michael Oustayan breaks capsules over a hotplate which melts and releases 2-chlorobenzalmalononitrile gas during for a gas chamber qualification at Camp Hansen, Okinawa, Japan, Dec. 19, 2... More

U.S. Marines with 2d Marine Division, rehearse clearing

U.S. Marines with 2d Marine Division, rehearse clearing their M50 Joint Service General Purpose Masks during an Individual Protective Equipment Confidence Exercise on Camp Lejeune, N.C., Jan. 28, 2021. The Mari... More

U.S. Marines with Headquarters Regiment, 2nd Marine

Pvt. Alejandro Calero, a U.S. Army Reserve military

Pvt. Alejandro Calero, a U.S. Army Reserve military police Soldier from the 320th Military Police Company, experiences the effects of the gas chamber during the annual training exercise Centurion Focus on Fort ... More

Air Force Airman 1st Class Emily Farnsworth, right,

Air Force Airman 1st Class Emily Farnsworth, right, a photojournalist with the 673d Air Base Wing Public Affairs Office, photographs paratroopers assigned to Mercury Company, 6th Brigade Engineer Battalion (Air... More

U.S. Army Pvt. Austin Ehler, assigned to Bravo Company,

U.S. Army Pvt. Austin Ehler, assigned to Bravo Company, 704th Brigade Support Battalion, 2nd Infantry Brigade Combat Team, puts on rubber boots, Feb. 6, 2019, during a chemical, biological, radiological and nuc... More

Lance Cpl. James Fyffe, a Chemical, biological,

Lance Cpl. James Fyffe, a Chemical, biological, radiological, and nuclear Defense specialist with the 24th Marine Expeditionary unit, breaks chlorobenzalmalononitrile capsules during gas chamber training on Cam... More

Sgt. Tyree Brown of A Company, 3rd Battalion, 354th

Sgt. Tyree Brown of A Company, 3rd Battalion, 354th Regiment checks a cadet's equipment before they head into the gas chamber filled with CS gas.

U.S. Marine Corps Pfc. Marquice J. Wilson, Chemical

U.S. Marine Corps Pfc. Marquice J. Wilson, Chemical Biological Radiological Specialist, Headquarter Company, Headquarters Regiment, 2nd Marine Logistics Group, instructs how to properly wear the Mission Oriente... More

U.S. Marine Corps Lance Cpl. Andy King, a chemical

U.S. Marine Corps Lance Cpl. Andy King, a chemical biological radiological nuclear clerk with Marine Aircraft Group 12, dispenses chlorobenzylidene malononitrile during a training event conducted on Marine Corp... More

Staff Sgt. Frederick Castro, a chemical, biological,

Staff Sgt. Frederick Castro, a chemical, biological, radiological, and nuclear noncommissioned officer with 1st battalion, 37th Armored Regiment, gets the Gas Chamber on Fort Bliss Training Area ready for Soldi... More

Marines and sailors from the Command Element, 15th

Marines and sailors from the Command Element, 15th Marine Expeditionary Unit, walk to the 33 Area gas chamber to become familiar with their Mission Oriented Protective Posture suits during an Individual Protect... More

Marines with I Marine Expeditionary Force, put on Mission

Marines with I Marine Expeditionary Force, put on Mission Oriented Protective Posture suits before entering a gas chamber at Camp Pendleton, Calif., March 26. The MOPP suit protects Marines from chemical and bi... More

U.S. Army Spc. Jose O. Incleramos, a chemical, biological,

U.S. Army Spc. Jose O. Incleramos, a chemical, biological, radiological and nuclear specialist from Cabo Rojo, Puerto Rico, assigned to Charlie Company, 307th Expeditionary Signal Battalion, vaporizes CS capsul... More

U.S. Marines with 3rd Marine Regiment exit a gas chamber

U.S. Marines with 3rd Marine Regiment exit a gas chamber wearing mission oriented protective posture (MOPP) gear after conducting annual gas chamber training during warrior week on Marine Corps Base Hawaii, Kan... More

U.S. Army Staff Sgt. George Nieves, assigned to Headquarters

U.S. Army Staff Sgt. George Nieves, assigned to Headquarters and Headquarters Brigade, 2nd Infantry Brigade Combat Team, 4th Infantry Division, takes off his gas mask, Feb. 6, 2018, during a gas mask confidence... More

Sgt. Travis Tabor, chemical biological radiological

Sgt. Travis Tabor, chemical biological radiological nuclear instructor, Command Element, 15th Marine Expeditionary Unit, releases CS gas capsules (tear gas) during an Individual Protective Equipment Confidence ... More

A Marine with Headquarters Battalion breaks the seal

A Marine with Headquarters Battalion breaks the seal on his M50 Joint-Service General Purpose Mask to qualify in the confidence chamber at Range 105 aboard Marine Corps Air Ground Combat Center, Twentynine Palm... More

U.S. Army Spc. Jose O. Incleramos, right, a chemical,

U.S. Army Spc. Jose O. Incleramos, right, a chemical, biological, radiological and nuclear specialist from Cabo Rojo, Puerto Rico, delivers a safety brief to fellow Soldiers assigned to Charlie Company, 307th E... More

U.S. Army Sgt. 1st Class Jeremy Harris, assigned to

U.S. Army Sgt. 1st Class Jeremy Harris, assigned to Headquarters and Headquarters Brigade, 2nd Infantry Brigade Combat Team, 4th Infantry Division, prepares to take off his mask, Feb. 6, 2019, during a gas mask... More

U.S. Air Force Airman 1st Class Luke Calip, an emergency

U.S. Air Force Airman 1st Class Luke Calip, an emergency management specialist with the 633rd Civil Engineer Squadron Emergency Management flight, removes his gas masks inside a chamber at Joint Base Langley-Eu... More

A Soldier assigned to the 2nd Infantry Brigade Combat

A Soldier assigned to the 2nd Infantry Brigade Combat Team, 4th Infantry Division, coughs after coming out of the gas chamber, Feb. 6, 2019, during a gas mask confidence training at the gas chamber on Fort Cars... More

Pvt. Aaron Testerman, a U.S. Army Reserve Soldier from

Pvt. Aaron Testerman, a U.S. Army Reserve Soldier from the 320th Military Police Company, assembles a M40 field protective mask during annual training exercise Centurion Focus on Fort Stewart, Georgia, July 22,... More

Army paratroopers assigned to Mercury Company, 6th

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