Staff Sgt. Edward Figueroa-Rodriguez, 35th Aircraft Maintenance Unit crew chief, performs routine maintenance on an F-16 Fighting Falcon wing at Kunsan Air Base, Republic of Korea, April 20, 2021. Crew chiefs are responsible for performing preventive, routine and specialized maintenance on aircraft to maintain mission effectiveness. (U.S. Air Force photo by Staff Sgt. Mya M. Crosby)