U.S. Air Force Senior Master Sgt. Emmanuel Amigleo, 70th Air Refueling Squadron flight engineer, performs a preflight check of a KC-10 Extender at Travis Air Force Base, California, Oct. 15, 2020. An eight-person crew performed air refueling training over Northern California to maintain flight certifications. (U.S. Air Force photo by Senior Airman Jonathon Carnell)