Service members keep a wide variety of aircraft ready for Northern Edge 2017
A U.S. Air Force F-16C Fighting Falcon aircraft with the 96th Test Wing based out of Eglin Air Force Base gets preflight operational checks at Joint Base Elmendorf-Richardson, Alaska, for exercise Northern Edge 2017, May 5, 2017. This exercise is Alaska’s largest and premier joint training exercise designed to practice operations, techniques and procedures, as well as enhance interoperability among the services. The exercise provides real-world proficiency in detection and tracking of units at sea, in the air and on land and response to multiple crises in the Indo-Asia-Pacific region. (U.S. Marine Corps photo by Lance Cpl. Andy Martinez)