The Hovensa refinery on the island of St. Croix, U.S. Virgin Islands, as viewed from a Coast Guard HH-65 dolphin helicopter during a Hurricane Omar overflight Sunday, Oct. 19, 2008. The Coast Guard patrols the Hovensa refinery because of its importance as one of the 10 largest refineries in the world. (U.S. Coast Guard/Petty Officer 3rd Class Barry Bena)