The crew of Coast Guard Cutter Mackinaw conducts a maneuver known as scarfing, which pushes and blocks the ice away from an area using the broadside of the cutter's hull, on the St. Marys River near the Soo Locks in Sault Ste. Marie, Mich., March 20, 2014. The Coast Guard is ice breaking in the river to prepare for the scheduled opening of the Soo Locks, March 25. (U.S. Coast Guard photo by Petty Officer 2nd Class Levi Read)
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