US Military News - U.S. Army Special Forces Soldiers conducted security operations training in Alaska during exercise Arctic Edge . br br Held under the authority of U.S. Northern Command, Arctic Edge is a biennial, large-scale, joint training exercise that prepares and tests the U.S. military’s ability to operate tactically in the extreme cold-weather conditions found in Arctic environments.br br "The appearance of U.S. Department of Defense (DoD) visual information does not imply or constitute DoD endorsement.