The winter icebreaking operation on the southern Great Lakes is officially over for the season.
This year, Coast Guard icebreakers from both Canada and the U-S kept up the effort of what's known as "Operation Coal Shovel" for 128 days.
The icebreaking started back on December 15th and it was a far longer season than the previous winter.
The coast guard escorted 184 ships through the St. Lawrence River, Lake Ontario, Lake Erie, the Detroit-St. Clair River corridor and southern Lake Huron.
