A KC-135R "Stratotanker" from the 909th Air Refueling Squadron, Kadena Air Force Base, Japan refuels an F-22 "Raptor", May 16, 2019, over the Joint Pacific Alaska Range Complex during Exercise Northern Edge 2019. Northern Edge is designed to sharpen participants’ tactical combat skills, to improve command, control and communication relationships and to develop plans and programs across the Joint Force. More