A security forces Airman from F.E. Warren Air Force Base, Wyo., poses as an opposing force during a training exercise at Camp Guernsey, Wyo., Oct. 18, 2012. The objective of this training was to instruct airmen how to properly clear multiple rooms of hostile forces, using close-quarters-combat techniques. (U.S. Air Force photo by Senior Airman Jarad A. Denton/Released)