JOINT BASE ELMENDORF-RICHARDSON, Alaska -- Air Force Tech. Sgt. Jorge Riviera, air traffic controller, issues flight clearances for fighter jets preparing to launch for in support of Exercise Northern Edge 11 at Joint Base Elmendorf-Richardson, Alaska, June 14. Northern Edge, Alaska's largest military training exercise, is designed to prepare joint forces to respond to crises throughout the Asia-Pacific region. (U.S. Navy photo/Mass Communication Specialist 2nd Class Rufus Hucks)