Buzzards kick off ACE 15
U.S. Air Force Airman 1st Class Keitha Whitaker Jr., 31st Aircraft Maintenance Squadron crew chief prepares an F-16 Fighting Falcon from Aviano Air Base, Italy, for takeoff at Kallax Air Base, Sweden, May 25, 2015, during Arctic Challenge Exercise 2015. Throughout the duration of the exercise, U.S., NATO and Partners for Peace militaries will work in a joint environment to deliver unified responses for simulated contingencies. ACE 15 is scheduled to continue until June 5, before concluding with its final air operations. (U.S. Air Force photo by Staff Sgt. Evelyn Chavez)