GRAND TERRE ISLANDS, La. - Petty Officer 3rd Class Aaron Tippetts, a marine safety technician based out of Alameda, Calif., is part of a shoreline assessment team on Grand Terre Two. He finds a tar ball, marks it with a hand-held GPS and takes a photo of it with a centimeter-scale behind it. U.S. Coast Guard photo by Petty Officer 2nd Class Matthew Schofield.
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