U.S. Coast Guard Seaman Anna Medow, a light technician aboard the Coast Guard Cutter James Rankin, homeported at the Coast Guard Yard in Curtis Bay, Maryland, tightens the bolts on a flashing 7x20' winter buoy in preparation for their seasonal buoy swap, Dec. 16, 2021. The winter buoys provide strong visibility and safe navigation for mariners in the area. (U.S. Coast Guard photo by Petty Officer 3rd Class Breanna Centeno/Released.)