Marines at Fort McCoy for the 2nd Marine Air Wing’s Ullr Shield exercise work on drilling a hole in the ice while managing water filtration operations at Big Sandy Lake on South Post on Jan. 17, 2018, 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: fort, mccoy, shield, training, ullr, wisconsin