U.S. Air Force Staff Sgt. Courtney Hill, an aircraft maintainer assigned to the 621st Contingency Response Wing stationed at Joint Base McGuire-Dix-Lakehurst, N.J., marshals a ROKAF C-130H as a Republic of Korea Air Force Airman gives instruction during combined training at exercise Turbo Distribution 17-3, at Pohang Air Base, Republic of Korea, April 10, 2017. (U.S. Air Force photo by Tech. Sgt. Gustavo Gonzalez/RELEASED)