An F-16 Fighting Falcon from Kunsan Air Base, Republic of Korea, prepares to take off during Red Flag-Alaska 09-2 April 21 at Eielson Air Force Base, Alaska. Red Flag-Alaska is a series of Pacific Air Forces commander-directed field training exercises for U.S. forces, providing joint offensive counter-air, interdiction, close air support and large force employment training in a simulated combat environment. (U.S. Air Force Photo/Senior Airman Jonathan Snyder)