U.S. Air Force Airman 1st Class Christopher Nelson, F-15C Eagle avionics specialist assigned to the 44th Aircraft Maintenance Unit, attaches a protective cover on an aircraft July 2, 2019, on Kadena Air Base, Japan. The life of a dedicated crew chief requires non-stop dedication, day and night, to maintain air-to-air combat superiority. (U.S. Air Force photo by Senior Airman Cynthia Belío)