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In this photo, a F-22 Raptor from the 525 Fighter Squadron returns from a mission during Exercise Northern Edge 15 at Joint Base Elmendorf-Richardson, June 18, 2015. Northern Edge 15 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 services; active duty, Reserve and National Guard units are involved.