Staff Sgt. Samill Harkness, 35th Aircraft Maintenance Unit load crew member, tightens bolts while turning jets at Kunsan Air Base, Republic of Korea, March 23, 2021. During a routine training event, F-16 Fighting Falcons landed and quickly refueled before taking off for another sortie. (U.S. Air Force photo by Tech. Sgt. Kristin S. High)