Jeff Mumford, 309th Commodities Maintenance Group, works on F-16 fuel system components at Hill Air Force Base, Utah, April 27, 2020. The 309th CMXG, one of seven groups in the Ogden Air Logistics Complex, is the technical repair center for landing gear, wheels, brakes, secondary power systems, hydraulics, pneudraulics, and composites. (U.S. Air Force photo by R. Nial Bradshaw)