ACE '15
                F-16 Fighting Falcon’s with the 510th Fighter Squadron from Aviano Air Base, Italy are parked on an apron at Kallax Air Base, Sweden, May 27, 2015 during Arctic Challenge Exercise 2015. Nine nations participated in the exercise to help ensure interoperability and strengthen relationships with NATO allies and Partners for Peace. (U.S. Air Force photo by Staff Sgt. Evelyn Chavez/Released)
                
                    
                        PHOTO BY:
                        Staff Sgt. Evelyn ChavezReleased
                    
                    
                        VIRIN:
                        150601-F-PB969-101.JPG
                    
                    
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                                IMAGE IS PUBLIC DOMAIN
                                
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