U.S. Air Force Staff Sgt. Cody Puente, a 35th Aircraft Maintenance Squadron crew chief deployed from Misawa Air Base, Japan, prepares a 13th Fighter Squadron F-16 Fighting Falcon on Eielson Air Force Base, Alaska, May 12, 2015, during RED FLAG-Alaska (RF-A) 15-2. RF-A 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 by Staff Sgt. Joshua Turner/Released)