![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://cdn2.picryl.com/thumbnail/2017/01/05/newport-news-va-jan-5-2017-damage-controlman-68e772-200.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,
![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/thumbnail/2002/01/21/a-marine-from-the-combined-joint-task-force-dressed-in-his-joint-service-lightweight-2af47a-200.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,
![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://cdn2.picryl.com/thumbnail/2014/11/04/us-marines-assigned-to-headquarters-and-headquarters-b6328b-200.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,
![In Mission-Oriented Protective Posture response level 4 (MOPP-4) gear, a Marine Corps Base Camp Buttler, Okinawa, Japan, Marine is completely encapsulated. Seen here is a closeup of the Chemical Protective Footware Cover ( In Mission-Oriented Protective Posture response level 4 (MOPP-4) gear, a Marine Corps Base Camp Buttler, Okinawa, Japan, Marine is completely encapsulated. Seen here is a closeup of the Chemical Protective Footware Cover (](https://cdn10.picryl.com/photo/2001/07/12/in-mission-oriented-protective-posture-response-level-4-mopp-4-gear-a-marine-82830d-1600.jpg)
In Mission-Oriented Protective Posture response level 4 (MOPP-4) gear, a Marine Corps Base Camp Buttler, Okinawa, Japan, Marine is completely encapsulated. Seen here is a closeup of the Chemical Protective Footware Cover (
![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-1600.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,
![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://cdn2.picryl.com/thumbnail/2017/01/31/senior-airman-christopher-bless-4th-aircraft-maintenance-65fbaf-200.jpg)