A cloud of smoke is used to conceal the movements of Security Forces airmen from F.E. Warren Air Force Base, Wyo., during the Road Warrior exercise at Camp Guernsey, Wyo., Oct. 19, 2012. During the exercise, Airmen use various tactics to maintain the security of a nuclear convoy. (U.S. Air Force photo by Senior Airman Jarad A. Denton/Released)