KC-135 Stratotanker refuel
U.S. Air National Guard 1st Lt. Alex Begue, 171st Air Refueling Squadron pilot, flies a KC-135 Stratotanker during exercise Saber Strike 17 above Riga, Latvia, June 8, 2017. The 171st ARS Airmen flew from the Selfridge Air National Guard base, Mich., to participate in the exercise. Saber Strike 17 promotes regional stability and security, while strengthening partner capabilities and fostering trust. (U.S. Air Force photo by Senior Airman Tryphena Mayhugh)