The Southern Lake Michigan NOAA buoy floats free after being set and anchored by the crew of the Coast Guard Cutter Mackinaw, a 240-foot icebreaker homeported in Cheboygan, Mich., April 26, 2013. The crew of the Mackinaw is conducting buoy operations along western Lake Michigan as part of Operation Spring Restore. U.S. Coast Guard photo by Lt. Dave Lieberman.
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