210819-F-PZ401-1039
A NATO E-3 Sentry aircraft assigned to Geilenkirchen NATO Air Base, Germany, departs after receiving fuel from a U.S. Air Force KC-135 Stratotanker aircraft assigned to the 100th Air Refueling Wing, Royal Air Force Mildenhall, England, over Europe, Aug. 19, 2021. The KC-135 extends the range of fighter, bomber, transport, intelligence, reconnaissance and surveillance aircraft. (U.S. Air Force photo by Senior Airman Joseph Barron)