The F-35A Lightning II sits in a hangar loaded with dummy external munitions, Feb. 13, 2019 at Luke Air Force Base, Ariz. After completing the external pylon installation training, the weapons loading standardization crew, a team of three Airmen, became the first team at Luke to be certified on external GBU-12 bomb and AIM-9 missile loading. (U.S. Air Force photo by Airman 1st Class Aspen Reid)