51st Civil Engineer Squadron Explosive Ordnance Disposal craftsman, positions a tool to detonate a simulated 60 millimeter mortar for removal during Operational Readiness Exercise Beverly Midnight 13-02 outside Bldg. 839 at Osan Air Base, Republic of Korea, March 20, 2013. These exercises tests Osan Airmen’s abilities during a heightened state of readiness while providing combat ready forces for close air support, air strike control, counter air, interdiction, theater airlift, and communications in the defense of the Republic of Korea. (U.S. Air Force photo/Senior Airman Alexis Siekert)