Two F-15E Strike Eagles from Mountain Home Air Force Base, Idaho, fly alongside the wing of a KC-135 Stratotanker from Fairchild Air Force Base, Wash., during a refueling mission June 25, 2015, over the Inland Northwest. During the mission some of the F-15E Strike Eagles were flown by Republic of Singapore air force pilots in training, as well as American pilots. (U.S. Air Force photo by Staff Sgt. Veronica Montes)