An F-16 Fighting Falcon assigned to the 13th Fighter Squadron, at Misawa Air Base, Japan, prepares to land on Eielson Air Force Base, Alaska, May 11, 2015, during Red Flag-Alaska 15-2. Red Flag is a series of Pacific Air Forces commander-directed field training exercises for U.S. and partner nation forces, providing combined offensive counter air, interdiction, close air support and large force employment training in a simulated combat environment. (U.S. Air Force photo/Staff Sgt. Joshua Turner)