The crew of U.S. Coast Guard Cutter Mackinaw (WLBB 30) prepare to transit beneath the Mackinac Bridge on Lake Michigan, Nov. 29, 2025. The Mackinaw was transiting under the bridge during a week long transit to Chicago, Illinois, where the crew maintained aids to navigation along the way. (U.S. Coast Guard photo by Petty Officer 3rd Class Mary Wysong)