F-16 Fighting Falcons from the 64th Aggressor Squadron at Nellis Air Force Base, Nev., line the flightline at Eielson AFB, Alaska, for Red Flag - Alaska. The exercise, formerly known as Cope Thunder, provides joint offensive counter-air, interdiction, close-air support and large-force employment training in a simulated combat environment. (U.S. Air Force photo/Airman 1st Class Justin Weaver)