The Coast Guard Cutter Alder approaches the Portage Lake Lift Bridge in Houghton, Mich., Dec. 16, 2016. The Alder and other Great Lakes Coast Guard cutters commenced Operation Taconite, the Coast Guard’s largest domestic ice-breaking operation, encompassing Lake Superior, the St. Mary’s River, the Straits of Mackinac and Lake Michigan, Dec. 19, 2016.

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Photo credit: © Conner Flecks / Alamy / Afripics
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Keywords: archive, armed, breaking, cold, d9, defence, forces, frozen, great, ice, icebreaking, lakes, military, reportage, servicemen, taconite, usa, winter