A Marine at Fort McCoy for the 2nd Marine Air Wing’s Ullr Shield exercise participates in cold-water immersion training on Jan. 17, 2018, at Big Sandy Lake on South Post at Fort McCoy, Wis. Ullr Shield is a training exercise designed to improve 2nd Marine Aircraft Wing’s capabilities in extreme cold-weather environments. The 2nd Marine Aircraft Wing is headquartered at Marine Corps Air Station Cherry Point, Hundreds of Marines participated in the exercise at Fort McCoy. ( Army Photo by Scott T. Sturkol, Public Affairs Office, Fort McCoy, Wis.)

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Photo credit: © AB Forces News Collection / Alamy / Afripics
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Keywords: cold-water, fort, immersion, marines, mccoy, shield, training, ullr, wi, wisconsin