U.S. Marines with Kilo Company, 3rd Battalion, 8th Marine Regiment, 2nd Marine Division, patrol after landing at the Indian Mountain Air Force Station, AK, March 12, 2018. Arctic Edge 2018 is a biennial, large-scale, joint training exercise that prepares and tests the U.S. military's capabilities in Arctic environments. (U.S. Marine Corps photo by Cpl. Bethanie Ryan)