Lance Cpl. Emmitt Aimino, a rifleman with Company C, 1st Battalion, 25th Marine Regiment, 4th Marine Division, secures his snow shoes during exercise Riley Xanten II, in Burwash, Ontario, 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. - Lance Cpl. Emmitt Aimino, a rifleman with Company C, 1st Battalion, 25th Marine Regiment, 4th Marine Division, secures his snow shoes during exercise Riley Xanten II, in Burwash, Ontario, 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.