Arctic Edge Paratroopers take part in U.S. Northern Command's Arctic Edge 20 exercise, Fort Greely, Alaska, Feb. 29, 2020. Arctic Edge is a biennial homeland defense exercise designed to provide high quality and effective training in extreme cold weather of the Arctic. SHARE: Download: Full Size (0.89 MB) Credit: Air Force Staff Sgt. Diana Cossaboom VIRIN: 200301-F-OG534-0010A.JPG Photo Gallery