Marine Staff Sgt. Mark Morrison adds a shovelful of snow to the layer covering a newly constructed thermal shelter Feb. 20, 2018, at the Northern Warfare Training Center's Black Rapids Training Site. Army Alaska provided the Marines a seven-day cold-weather leader course at the NWTC facility in preparation for their participation in the upcoming Northern Command Exercise Arctic Edge. (Army photo/John Pennell)

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Photo credit: © AB Forces News Collection / Alamy / Afripics
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Keywords: .., 18, alaska, arctic, army, black, cente, cold, corps, edge, ii, leaders, marine, marines, mef, northern, nwtc, rapids, site, snowshoe, training, usarak, warfare, weather