PITTSBURGH INTERNATIONAL AIRPORT AIR RESERVE STATION, Pa. -- Airmen assigned to the 911th Aircraft Maintenance Squadron conduct a pre-flight inspection on a C-17 Globemaster III at the Pittsburgh International Airport Air Reserve Station, Pennsylvania, April 22, 2022. Pre-flight inspections are conducted before all flights to ensure the mission and operational readiness of aircraft. (U.S. Air Force photo by Joshua J. Seybert)