Paratroopers from C Troop, 1st Squadron (Airborne), 40th Cavalry Regiment jump into Donnelly Drop Zone Feb. 29, 2020, from a Royal Canadian Air Force C-130 as part of Arctic Edge 2020. As a Homeland Defense exercise, AE20 is designed to provide high quality and effective training in the extreme cold-weather conditions found in Arctic environments. The exercise is conducted under the authority of North American Aerospace Defense Command and U.S. Northern Command. AE20 is the largest joint exercise scheduled in Alaska this year. (Army photo/John Pennell)