51st Security Forces Squadron defenders move victims from a simulated attack during Exercise Beverly Herd 17-3 at Osan Air Base, Republic of Korea, September 20, 2017. During the simulated attack defenders transported victims to the 51st Medical Group while the 51st Civil Engineer Squadron explosive ordnance disposal unit disposed of two unexploded ordinances. (U.S. Air Force photo by Airman 1st Class Gwendalyn Smith)