Airman 1st Class Kathryn Danley, 62nd Maintenance Squadron jet mechanic, adjusts machinery inside a C-17 Globemaster III engine on Joint Base Lewis-McChord, Wash., May 20, 2020. Every 180 days a C-17 receives a home station check, during which it undergoes a thorough safety and functionality inspection. (U.S. Air Force photo by Airman 1st Class Mikayla Heineck)