SFS Global Strike Challenge Obstacle Course
Master Sgt. Thomas Carpino, 28th Security Forces Squadron operations flight chief, low crawls under barbwire during the Global Strike Challenge competition at Camp Guernsey, Wyo., Sept. 25, 2014. Carpino and his team competed in the three-day challenge testing their tactics, shooting, mental and physical capabilities. (U.S. Air Force photo by Tech. Sgt. Jerry Fleshman/Released)