Coast Guardsmen clear ice from a buoy. The Coast Guard maintains the "signposts" and "traffic signals"--more than 50,000 federal aids to navigation, including buoys, lighthouses and beacons--on the nation’s waterways. US Coast Guard Art Program 2002 Collection, Ob ID # 200212, "De-icing the buoy," Sidney Hermel, pastel, 20 x 15
