![File:US Navy 040822-N-9712C-002 A Seabee assigned to Naval Mobile Construction Battalion Four Zero (NMCB-40), mans a machine gun after donning Mission Oriented Protective Posture (MOPP) gear during a simulated Chemical-Biological at.jpg - File:US Navy 040822-N-9712C-002 A Seabee assigned to Naval Mobile Construction Battalion Four Zero (NMCB-40), mans a machine gun after donning Mission Oriented Protective Posture (MOPP) gear during a simulated Chemical-Biological at.jpg -](https://upload.wikimedia.org/wikipedia/commons/3/31/US_Navy_040822-N-9712C-002_A_Seabee_assigned_to_Naval_Mobile_Construction_Battalion_Four_Zero_%28NMCB-40%29%2C_mans_a_machine_gun_after_donning_Mission_Oriented_Protective_Posture_%28MOPP%29_gear_during_a_simulated_Chemical-Biological_at.jpg)
File:US Navy 040822-N-9712C-002 A Seabee assigned to Naval Mobile Construction Battalion Four Zero (NMCB-40), mans a machine gun after donning Mission Oriented Protective Posture (MOPP) gear during a simulated Chemical-Biological at.jpg -
![File:U.S. Marines with I Marine Expeditionary Force Headquarters Group and the 9th Communication Battalion receive their mission-oriented protective posture (MOPP) suits during a chemical, biological, radiological 110708-M-BT412-002.jpg - Wikimedia Commons File:U.S. Marines with I Marine Expeditionary Force Headquarters Group and the 9th Communication Battalion receive their mission-oriented protective posture (MOPP) suits during a chemical, biological, radiological 110708-M-BT412-002.jpg - Wikimedia Commons](https://upload.wikimedia.org/wikipedia/commons/thumb/c/c6/U.S._Marines_with_I_Marine_Expeditionary_Force_Headquarters_Group_and_the_9th_Communication_Battalion_receive_their_mission-oriented_protective_posture_%28MOPP%29_suits_during_a_chemical%2C_biological%2C_radiological_110708-M-BT412-002.jpg/800px-thumbnail.jpg)
File:U.S. Marines with I Marine Expeditionary Force Headquarters Group and the 9th Communication Battalion receive their mission-oriented protective posture (MOPP) suits during a chemical, biological, radiological 110708-M-BT412-002.jpg - Wikimedia Commons
![File:US Navy 040527-N-9712C-003 Naval Mobile Construction Battalion Forty (NMCB-40) Commanding Officer, Cmdr. G.E. Taylor II marches his battalion in full Mission Oriented Protective Posture (MOPP) equipment.jpg - Wikimedia Commons File:US Navy 040527-N-9712C-003 Naval Mobile Construction Battalion Forty (NMCB-40) Commanding Officer, Cmdr. G.E. Taylor II marches his battalion in full Mission Oriented Protective Posture (MOPP) equipment.jpg - Wikimedia Commons](https://upload.wikimedia.org/wikipedia/commons/2/27/US_Navy_040527-N-9712C-003_Naval_Mobile_Construction_Battalion_Forty_%28NMCB-40%29_Commanding_Officer%2C_Cmdr._G.E._Taylor_II_marches_his_battalion_in_full_Mission_Oriented_Protective_Posture_%28MOPP%29_equipment.jpg)
File:US Navy 040527-N-9712C-003 Naval Mobile Construction Battalion Forty (NMCB-40) Commanding Officer, Cmdr. G.E. Taylor II marches his battalion in full Mission Oriented Protective Posture (MOPP) equipment.jpg - Wikimedia Commons
![File:US Air Force (USAF) 119th Fighter Wing (FW) unit personnel wear their Chemical Warfare Defensive File:US Air Force (USAF) 119th Fighter Wing (FW) unit personnel wear their Chemical Warfare Defensive](https://upload.wikimedia.org/wikipedia/commons/c/c2/US_Air_Force_%28USAF%29_119th_Fighter_Wing_%28FW%29_unit_personnel_wear_their_Chemical_Warfare_Defensive_Equipment_%28CWDE%29_or_Mission_Oriented_Protective_Posture_level-3_%28MOPP-3%29_gear_during_a_unit_training_exercise_at_040207-F-WA217-019.jpg)
File:US Air Force (USAF) 119th Fighter Wing (FW) unit personnel wear their Chemical Warfare Defensive
![File:Dressed in Mission-Oriented Protective Posture level-3 (MOPP-3) gear, a US Navy (USN) Corpsmen with the 24th Marine Expeditionary Unit (MEU) assess a wounded Marine during a simulat - DPLA - 2f2452ff61e1301eb05ff54ec4c14bc7.jpeg - File:Dressed in Mission-Oriented Protective Posture level-3 (MOPP-3) gear, a US Navy (USN) Corpsmen with the 24th Marine Expeditionary Unit (MEU) assess a wounded Marine during a simulat - DPLA - 2f2452ff61e1301eb05ff54ec4c14bc7.jpeg -](https://upload.wikimedia.org/wikipedia/commons/9/99/Dressed_in_Mission-Oriented_Protective_Posture_level-3_%28MOPP-3%29_gear%2C_a_US_Navy_%28USN%29_Corpsmen_with_the_24th_Marine_Expeditionary_Unit_%28MEU%29_assess_a_wounded_Marine_during_a_simulat_-_DPLA_-_2f2452ff61e1301eb05ff54ec4c14bc7.jpeg)
File:Dressed in Mission-Oriented Protective Posture level-3 (MOPP-3) gear, a US Navy (USN) Corpsmen with the 24th Marine Expeditionary Unit (MEU) assess a wounded Marine during a simulat - DPLA - 2f2452ff61e1301eb05ff54ec4c14bc7.jpeg -
![File:US Navy 100806-N-9564W-089 Seabees run in place in full mission oriented protective posture (MOPP) gear and gas masks during a battalion readiness exercise at Naval Construction Battalion Center, Gulfport.jpg - Wikimedia Commons File:US Navy 100806-N-9564W-089 Seabees run in place in full mission oriented protective posture (MOPP) gear and gas masks during a battalion readiness exercise at Naval Construction Battalion Center, Gulfport.jpg - Wikimedia Commons](https://upload.wikimedia.org/wikipedia/commons/thumb/3/3e/US_Navy_100806-N-9564W-089_Seabees_run_in_place_in_full_mission_oriented_protective_posture_%28MOPP%29_gear_and_gas_masks_during_a_battalion_readiness_exercise_at_Naval_Construction_Battalion_Center%2C_Gulfport.jpg/1280px-thumbnail.jpg)