Staff Sgt. Corey Spencer, 80th Aircraft Maintenance Unit crew chief, marshals an F-16 Fighting Falcon from the 35th Fighter Squadron during Beverly Midnight 16-3 at Kunsan Air Base, Republic of Korea, May 4, 2016. The exercise tested Airmen on their ability to survive and operate while under the stress of simulated wartime activities all while ensuring aircraft generate. (U.S. Air Force photo by Staff Sgt. Nick Wilson/Released)