U.S. Air Force Airman 1st Class Anthony Sanders (left) assigned to Alpha Flight, 8th Security Forces Squadron, sprints from one station to the next as teammates cheer him on during the Defenders Challenge at Kunsan Air Base, Republic of Korea, Sept. 28, 2012. Teams were timed on their ability to complete an obstacle course as they highlighted combat skills learned during recent training. (U.S. Air Force photo by Senior Airman Brigitte N. Brantley/Released)