22 of 38: In this Wednesday April 21, 2010 photo released by the U.S. Coast Guard, a fire aboard the mobile offshore drilling unit Deepwater Horizon burns 52-miles southeast of Venice, La. Helicopters, ships and an airplane searched waters off Louisiana's coast Wednesday for missing workers after an explosion and fire that left an offshore drilling platform tilting in the Gulf of Mexico. ((AP Photo/U.S. Coast Guard, Petty Officer 2nd Class Scott Lloyd))

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