Staff Sgt. Joshua Heath, 25th Aircraft Maintenance Unit crew chief, marshals an A-10 Thunderbolt II during exercise Beverly Midnight 16-01 at Osan Air Base, Republic of Korea, March 9, 2016. The jet was part of the first series of A-10s to take off during BM 16-01, an exercise designed to test the warfighting capabilities of the units assigned to the 51st Fighter Wing with a focus on readiness, defending the base and executing flying operations. (U.S. Air Force photo by Tech. Sgt. Travis Edwards/Released)