The Coast Guard Cutter Mackinaw prepares to depart Sault Ste. Marie, Michigan to begin ice breaking operations, March 22, 2018. The U.S. and Canadian Coast Guards helped break ice on Whitefish Bay and Lake Superior ahead of the opening of the Sault Ste Marie Locks on March 25. (U.S. Coast Guard photo by Master Chief Petty Officer Alan Haraf)