Coast Guard Cutter Mackinaw (WLBB 30), a Great Lakes District 240-foot icebreaker, transits through the Cheboygan River toward Lake Huron on Jan. 28, 2026. The Mackinaw was en route to the Straits of Mackinac to conduct track maintenance to support the steady flow of commerce and overall safety throughout the region. (U.S. Coast Guard photo by Auxiliarist Matthew Thompson)