Push on
U.S. Air Force Airmen from the 820th Base Defense Group sprint to keep up their pace for the Pre-Ranger Focus Training Course at Moody Air Force Base, Ga., Sep. 5, 2012. Each person had three hours to complete a 12-mile course while carrying a simulated M-4 and 60 pound rucksack. (U.S. Air Force photo by Airman 1st Class Paul Francis/Released)