Soo Lock doors close behind the Coast Guard Cutter Katmai Bay as the cutter passes through the Soo Locks in Sault Ste. Marie, Mich., March 21, 2014. The Katmai Bay along with the Coast Guard Cutters Mackinaw and Morro Bay passed through the locks together en route to breaking ice in the St. Marys River and Lake Superior in preparation of the scheduled opening of the locks, March 25. (U.S. Coast Guard photo by Petty Officer 2nd Class Levi Read)