![File:US Navy 100806-N-4440L-042 Seabees don their chemical, biological, radiological gear during a mission oriented protective posture (MOPP) level 4 drill.jpg - Wikimedia Commons File:US Navy 100806-N-4440L-042 Seabees don their chemical, biological, radiological gear during a mission oriented protective posture (MOPP) level 4 drill.jpg - Wikimedia Commons](https://upload.wikimedia.org/wikipedia/commons/a/a7/US_Navy_100806-N-4440L-042_Seabees_don_their_chemical%2C_biological%2C_radiological_gear_during_a_mission_oriented_protective_posture_%28MOPP%29_level_4_drill.jpg)
File:US Navy 100806-N-4440L-042 Seabees don their chemical, biological, radiological gear during a mission oriented protective posture (MOPP) level 4 drill.jpg - Wikimedia Commons
![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/D18X6K/us-marine-in-mopp-gear-inc-gas-mask-uses-m272-chemical-agent-water-D18X6K.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
Space Systems Command - SSC - A young KUDOS deployer tries on chemical gear and a gas mask as part of mission orientated protective posture, or MOPP gear at Fort MacArthur in
![Dressed in their Mission-Oriented Protective Posture (MOPP) gear, US Navy (USN) personnel of the Naval Mobile Construction Battalion (NMCB) 1's Survey Team check the M256 kit instructions to make sure they get Dressed in their Mission-Oriented Protective Posture (MOPP) gear, US Navy (USN) personnel of the Naval Mobile Construction Battalion (NMCB) 1's Survey Team check the M256 kit instructions to make sure they get](https://cdn10.picryl.com/photo/2006/02/07/dressed-in-their-mission-oriented-protective-posture-mopp-gear-us-navy-usn-4fc59b-1024.jpg)
Dressed in their Mission-Oriented Protective Posture (MOPP) gear, US Navy (USN) personnel of the Naval Mobile Construction Battalion (NMCB) 1's Survey Team check the M256 kit instructions to make sure they get
![Two soldiers demonstrate mission-oriented protective posture (MOPP) Level IV gear, including M-17A1 masks - PICRYL - Public Domain Media Search Engine Public Domain Search Two soldiers demonstrate mission-oriented protective posture (MOPP) Level IV gear, including M-17A1 masks - PICRYL - Public Domain Media Search Engine Public Domain Search](https://cdn10.picryl.com/photo/1990/03/13/two-soldiers-demonstrate-mission-oriented-protective-posture-mopp-level-iv-5dee4f-1024.jpg)