An F-15C Eagle from the 67th Fighter Squadron at Kadena Air Base, Japan, takes off during exercise Northern Edge from Joint Base Elmendorf-Richardson, Alaska, June 16, 2015. Northern Edge 2015 is Alaska’s premier joint training exercise designed to practice operations, techniques and procedures as well as enhance interoperability among the services. Thousands of participants from all the services and components were involved. (U.S. Air Force photo/Staff Sgt. William Banton)