A Marine from the Combined Joint Task Force (CJTF) and an Australian Service Member work together to roll a barrel full of sand bags while in training at Camp Doha, Kuwait, during OPERATION ENDURING FREEDOM. The Marine is dressed in his Joint Service Lightweight Integrated Suit Technology (JSLIST), wearing an M40 Chemical-Biological Field Mask with a C2A1 filter canister. The Australian is wearing his MKIV No1 NBC (Nuclear Biological Chemical) Suits with Avon FM12 Mask. An evaluator observes the process