A crew chief from the 51st Maintenance Group marshals an A-10 Thunderbolt II prior to takeoff for a training mission during exercise Beverly Herd 16-01 at Osan Air Base, Republic of Korea, May 10, 2016. The 25th Fighter Squadron arrived with A-10s to Osan in October 1993. BH 16-01 is a week-long readiness exercise for the 51st Fighter Wing that includes a plethora of scenarios (U.S. Air Force photo by Tech. Sgt. Travis Edwards/Released)