Into the frontier: close-quarters-combat
Security forces Airmen from F.E. Warren Air Force Base, Wyo., breach a room during a close-quarters combat class at Camp Guernsey, Wyo., Oct. 18, 2012. This class was part of a 10-day, nuclear-convoy training exercise called Road Warrior. (U.S. Air Force photo by Senior Airman Jarad A. Denton/Released)