Although much of the country is welcoming spring and the warm weather that comes with it, many of the Great Lakes waterways are still laden with ice. Coast Guard icebreaking tugs continue to work on the lakes to keep critical shipping lanes clear for merchant vessels, remove hazardous obstructions to navigation and free ships stuck in ice. Their mission sustains a bi-national economy and keeps maritime crews safe. This year’s icebreaking season has been a busy one filled with successful missions and a few unexpected challenges.