An F-15E Strike Eagle from RAF Lakenheath, England, receives fuel from a KC-135 Stratotanker May 19, 2017. The KC-135 is assigned to RAF Mildenhall, England. Both aircraft are on their way to support Arctic Challenge 2017, a multinational exercise encompassing 11 nations and more than 100 aircraft. (U.S. Air Force photo by Tech. Sgt. David Dobrydney)