Members of the 51st Security Forces Squadron performed mounting and un-mounting operations training during the combat readiness course at Osan Air Base, June 27. During training, SF members' reacted to [simulated] improvised explosive devices as well as [hostile] contact left and right drills. Security Forces members are responsible for ensuring the safety of bases, weapons, property and personnel from hostile forces. (U.S. Air Force Photo by/Staff Sgt. Daylena Gonzalez)