Oil is seen on the surface of the Gulf of Mexico in an aerial view of the Deepwater Horizon oil spill off the coast of Mobile, Alabama, in this handout photograph taken from a U.S. Coast Guard HC-144 Ocean Sentry aircraft on May 6, 2010 and obtained on May 9, 2010. REUTERS/Mass Communication Specialist 1st Class Michael B. Watkins/U.S. Navy/Handout
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