Tankers in the air, maintenance put them there
Senior Airman Kailey Simmonds, 22nd Aircraft Maintenance Squadron assistant flying crew chief, monitors a KC-135 Stratotanker assigned to McConnell Air Force Base, Kan., as it receives fuel as part of pre-flight checks, July 11, 2017, at Eielson AFB, Ala. Maintenance crews work around the clock to ensure aircraft are in working order before any flight. (U.S. Air Force photo/Staff Sgt. Rachel Waller)