The crew of the Coast Guard Cutter Mackinaw, a 240-foot icebreaker homeported in Cheboygan, Mich., reposition shoal buoys off the entrance to Burns Harbor, Ind., to better mark a shoal created by Hurricane Sandy that covered much of the entrance to this critical commercial port. 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. Stephen Elliott.