170512-M-HD015-0034 ANCHORAGE, Alaska (May 12, 2017) An EA-18G Growler conducts air-to-air refueling during exercise Northern Edge 17 at Joint Base Elmendorf-Richardson, Alaska. Northern Edge 17 is Alaska’s premier joint-training exercise and is conducted to strengthen the interoperability between various aircraft from all services. (U.S. Marine Corps photo by Lance Cpl. Jacob A. Farbo/Released)