Crew chief inspects a wheel and tire assembly on a C-17 Globemaster III
Senior Airman Joshua Knight, 911th Aircraft Maintenance Squadron crew chief, inspects a wheel and tire assembly on a C-17 Globemaster III at the Pittsburgh International Airport Air Reserve Station, Pa., Feb. 14, 2020. Crew chiefs work in all kinds of weather, including freezing temperatures, to maintain operational readiness. (U.S. Air Force photo by Joshua J. Seybert)