A Marine with Combined Joint Task Force (CJTF) dressed in his Joint Service Lightweight Integrated Suit Technology (JSLIST), wearing an M40 Chemical-Biological Field Mask with a C2A1 filter canister, assembles a 5.56 mm Colt M16A2 Assault Rifle during training with service members from Australia, wearing their MKIV No1 NBC (Nuclear Biological Chemical) Suits with Avon FM12 Mask. At Camp Doha, Kuwait during OPERATION ENDURING FREEDOM