U. S. Air Force Staff Sgt. Joshua Boyd, armament maintenance supervisor assigned to the 18th Equipment Maintenance Squadron, inspects a 20mm Automatic M61A1 at Kadena Air Base, Japan, May 29, 2019. From inspecting and troubleshooting to making hands-on repairs and maintaining proper standards, Aerospace Ground Equipment professionals make sure Kadena's planes are always ready for flight. (U.S. Air Force photo by Naoto Anazawa)