An F-16, with the 18th Aggressor Squadron, takes off May 7, 2008, for a training mission over the Pacific Alaskan Range Complex, at Eielson Air Force Base, Alaska during Exercise Northern Edge 08. This is a joint training exercise hosted by Alaskan Command and is one of a series of U.S. Pacific Command exercises that prepare joint forces to respond to crises in the Asian Pacific region. (U.S. Air Force Photo/Airman 1st Class Jonathan Snyder)