F-35s forward deploy to Bulgaria
A U.S. Air Force F-35A Lightning II aircraft assigned to Hill Air Force Base, Utah, prepares to be refueled by a KC-135 Stratotanker, from the 459th Air Refueling Wing, during a flight to Graf Ignatievo Air Base, Bulgaria, April 28, 2017. Eight F-35s deployed to Royal Air Force Lakenheath, England, on April 15 and two forward deployed to Bulgaria for a brief time which allowed the F-35s to engage in familiarization training within the European theater while reassuring allies and partners of U.S. dedication to the enduring peace and stability of the region. (U.S. Air Force photo/Staff Sgt. Kate Thornton)