Arctic Edge A paratrooper from the Chaos Troop, 1st Squadron (Airborne), 40th Cavalry Regiment, participates in U.S. Northern Command's Exercise Arctic Edge 20 at the Donnelly drop zone at Fort Greely, Alaska, Feb. 29, 2020. SHARE IMAGE: Download Image: Full Size (1.14 MB) Photo By: Air Force Staff Sgt. Diana Cossaboom VIRIN: 200301-F-OG534-0003.JPG Photo Gallery