DVIDS - Images - MOPP it Up / TRT and CBRN Conduct a Live-Fire Range with MOPP Gear [Image 21 of 21]
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,
MOPP (protective gear) - Wikipedia
This is what your next MOPP suit could look like - We Are The Mighty