A U.S. Air Force F-15E Strike Eagle assigned to the 492nd Fighter Squadron at RAF Lakenheath, England, approaches a KC-135 Stratotanker from the 100th Air Refueling Wing, RAF Mildenhall, England, to receive fuel over Scotland during exercise Joint Warrior 19-1, April 4, 2019. Exercise Joint Warrior is a biannual, U.K.-led multinational exercise and one of largest NATO exercises in Europe, involving 13 countries. (U.S. Air Force photo by Tech. Sgt. Emerson Nuñez)