A KC-10A Extender refuels an F-16 Fighting Falcon over Afghanistan in 2009.Staff Sgt. Michael Keller/United States Air Forces CentralKC-10A Extenders served as aerial refueling tankers in the US Air Force from 1981 to 2024.The first KC-10A Extender ever built is on display at the Air Mobility Command Museum in Delaware.Visitors can get a rare glimpse into the aircraft's refueling operator station.Military aircraft don't have time to stop and ref…