U.S. Coast Guard Cutter Spar (WLB 206), home ported in Duluth, Minnesota, begins Operation Taconite on Lake Superior near Duluth, Minnesota, Dec. 10, 2025. Operation Taconite is the Coast Guard's largest domestic icebreaking operation, clearing channels in the ice so vessels can continue to navigate even during the winter months. (U.S. Coast Guard photo by Cmdr. Donald Rudnickas)