A U.S. Air Force crew chief with the 9th Aircraft Maintenance Unit speaks with aircrew members with the 9th Bomb Squadron as they conduct preflight inspections prior to takeoff at Dyess Air Force Base, Texas, Jan. 8, 2021. Crew chiefs also conduct post flight inspections and other maintenance taskers that include diagnosing malfunctions, replacing components, engine maintenance and egress inspections to ensure the aircraft are mission ready. (U.S. Air Force photo by Staff Sgt. David Owsianka)