Marines with Company C, 1st Battalion, 25th Marine Regiment, 4th Marine Division, use snow shoes to patrol the rough terrain of Burwash, Ontario, during exercise Riley Xanten II, Feb. 3-5, 2017. During the exercise, the Marines joined soldiers from the Canadian Armed Forces to exchange knowledge and increase proficiency in cold weather tactics, survival skills, shelter building, ice fishing, and more. (U.S. Marine Corps photo by Sgt. Sara Graham/released)