Security Forces Airmen from F.E. Warren Air Force Base, Wyo., use smoke to cover their movements as they sweep the area for potential threats during the Road Warrior exercise at Camp Guernsey, Wyo., Oct. 19, 2012. During the exercise, Airmen are taught to achieve 360-degree security when responding to threats against a nuclear convoy. (U.S. Air Force photo by Senior Airman Jarad A. Denton/Released)