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. Joint Warrior is hosted by the U.K. biannually and aims to allow NATO forces to conduct joint operations in a complex environment, involving different military branches and units from different countries against a range of current and future threats. (U.S. Air Force photo by Tech. Sgt. Emerson Nuñez)