Security Forces Exercise
Staff Sgt. Phillip Edwards, 460th Security Forces Squadron defender, conducts tactical movements during a field exercise in preparation for the Defenders Challenge July 27, 2018, on Buckley Air Force Base, Colo. Select Air Force Space Command defenders will compete against one another at Peterson A, Colo., and then winners will compete at Camp Bullis, Texas, for the final challenge. (U.S. Air Force photo by Airman 1st Class Michael D. Mathews)