![US Marine in MOPP gear inc gas mask uses M272 Chemical Agent Water Testing Kit ( lewisite, nerve agents, cyanide and mustard Stock Photo - Alamy US Marine in MOPP gear inc gas mask uses M272 Chemical Agent Water Testing Kit ( lewisite, nerve agents, cyanide and mustard Stock Photo - Alamy](https://c8.alamy.com/comp/D18XN7/us-marine-in-mopp-gear-inc-gas-mask-uses-m272-chemical-agent-water-D18XN7.jpg)
US Marine in MOPP gear inc gas mask uses M272 Chemical Agent Water Testing Kit ( lewisite, nerve agents, cyanide and mustard Stock Photo - Alamy
![A soldier wearing Mission-Oriented Protective Posture response level 4 (MOPP -4) gear, including an M-17A1 mask, and a M-16A1 rifle - NARA & DVIDS Public Domain Archive Public Domain Search A soldier wearing Mission-Oriented Protective Posture response level 4 (MOPP -4) gear, including an M-17A1 mask, and a M-16A1 rifle - NARA & DVIDS Public Domain Archive Public Domain Search](https://cdn10.picryl.com/photo/1990/03/13/a-soldier-wearing-mission-oriented-protective-posture-response-level-4-mopp-97fa48-1024.jpg)
A soldier wearing Mission-Oriented Protective Posture response level 4 (MOPP -4) gear, including an M-17A1 mask, and a M-16A1 rifle - NARA & DVIDS Public Domain Archive Public Domain Search
![File:US Navy 100806-N-4440L-051 Equipment Operator Construction Apprentice Steven Lott dons his chemical, biological, radiological (CBR) gear during a mission oriented protective posture (MOPP) level 4 drill.jpg - Wikimedia Commons File:US Navy 100806-N-4440L-051 Equipment Operator Construction Apprentice Steven Lott dons his chemical, biological, radiological (CBR) gear during a mission oriented protective posture (MOPP) level 4 drill.jpg - Wikimedia Commons](https://upload.wikimedia.org/wikipedia/commons/5/57/US_Navy_100806-N-4440L-051_Equipment_Operator_Construction_Apprentice_Steven_Lott_dons_his_chemical%2C_biological%2C_radiological_%28CBR%29_gear_during_a_mission_oriented_protective_posture_%28MOPP%29_level_4_drill.jpg)
File:US Navy 100806-N-4440L-051 Equipment Operator Construction Apprentice Steven Lott dons his chemical, biological, radiological (CBR) gear during a mission oriented protective posture (MOPP) level 4 drill.jpg - Wikimedia Commons
Working in Mission-Oriented Protective Posture response level 4 (MOPP-4) gear SENIOR AIRMAN (SRA) Jessica
![Dressed in Mission-Oriented Protective Posture response level 4 (MOPP-4) suit, Captain (CAPT) Braxton, (left), USAF, helps SENIOR AIRMAN (SRA) Mario Cooper, USAF, 81st Mission Support Group Squadron (MSGS) with the strap to Dressed in Mission-Oriented Protective Posture response level 4 (MOPP-4) suit, Captain (CAPT) Braxton, (left), USAF, helps SENIOR AIRMAN (SRA) Mario Cooper, USAF, 81st Mission Support Group Squadron (MSGS) with the strap to](https://cdn10.picryl.com/photo/2001/08/30/dressed-in-mission-oriented-protective-posture-response-level-4-mopp-4-suit-92ef08-1024.jpg)
Dressed in Mission-Oriented Protective Posture response level 4 (MOPP-4) suit, Captain (CAPT) Braxton, (left), USAF, helps SENIOR AIRMAN (SRA) Mario Cooper, USAF, 81st Mission Support Group Squadron (MSGS) with the strap to
![In Mission-Oriented Protective Posture response level 4 (MOPP-4) gear, to include the MCU-2A protective mask, an airman completes a sweep of the area under a step van looking for any unexploded ordinances In Mission-Oriented Protective Posture response level 4 (MOPP-4) gear, to include the MCU-2A protective mask, an airman completes a sweep of the area under a step van looking for any unexploded ordinances](https://cdn10.picryl.com/photo/2001/05/02/in-mission-oriented-protective-posture-response-level-4-mopp-4-gear-to-include-5314d6-1024.jpg)
In Mission-Oriented Protective Posture response level 4 (MOPP-4) gear, to include the MCU-2A protective mask, an airman completes a sweep of the area under a step van looking for any unexploded ordinances
While wearing MOPP Level 4 gear a test player prepares to use a ROCS auto-injector on a simulated causality. Photo Credit: Jose Rodriguez, MEDCoE
![In Mission-Oriented Protective Posture response level 4 (MOPP-4) gear. A Marine, dressed in his Joint Service Lightweight Integrated Suit Technology (JSLIST), wearing an M40 Chemical-Biological Field Mask with a C2A1 filter canister, In Mission-Oriented Protective Posture response level 4 (MOPP-4) gear. A Marine, dressed in his Joint Service Lightweight Integrated Suit Technology (JSLIST), wearing an M40 Chemical-Biological Field Mask with a C2A1 filter canister,](https://cdn10.picryl.com/photo/2002/01/21/in-mission-oriented-protective-posture-response-level-4-mopp-4-gear-a-marine-32278c-1024.jpg)
In Mission-Oriented Protective Posture response level 4 (MOPP-4) gear. A Marine, dressed in his Joint Service Lightweight Integrated Suit Technology (JSLIST), wearing an M40 Chemical-Biological Field Mask with a C2A1 filter canister,
![Completing his Mission-Oriented Protective Posture response level 4 (MOPP-4) suit, US Air Force (USAF) AIRMAN First Class (A1C) Chad R. Lynch, 31st Civil Engineer Squadron (CES), Rapid Runway Response (RRR) team member Completing his Mission-Oriented Protective Posture response level 4 (MOPP-4) suit, US Air Force (USAF) AIRMAN First Class (A1C) Chad R. Lynch, 31st Civil Engineer Squadron (CES), Rapid Runway Response (RRR) team member](https://cdn10.picryl.com/photo/2002/11/20/completing-his-mission-oriented-protective-posture-response-level-4-mopp-4-40dcc6-1024.jpg)