VALDEZ, Alaska - The Valdez Star, an oil response vessel, is skimming the water in the vicinity of the light silver diesel sheen from the tug Pathfinder near Bligh Reef Dec. 24, 2009. The tug Pathfinder went aground on Bligh Reef Wednesday evening creating a light grey or silver diesel sheen spanning an area approximately three miles long and 30 yards wide approximately one mile east of Glacier Island. U.S. Coast Guard photo by Petty Officer 2nd Class Stephen Murphy