CLEVELAND - Coast Guardsmen aboard the U.S. Coast Guard Cutter Bristol Bay, based in Detroit, replace buoys in Cleveland Harbor Dec. 2, 2010, with smaller unlit buoys designed to better withstand damage from ice as Lake Erie freezes during the winter months. U.S., Canadian and industry partners work together to retrieve or replace about half of the lighted and unlighted buoys and beacons throughout the Great Lakes in an evolution known as Operation Fall Retrieve, the largest domestic aids to navigation recovery operation in the United States. (U.S. Coast Guard video by Petty Officer 2nd Class Lauren Jorgensen)
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