Photos: A look back at the 2010 Gulf oil spill
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Credit: Getty Images
WASHINGTON - AUGUST 20: BP Deepwater Horizon oil spill National Incident Commander Thad Allen briefs reporters about the latest progress in capping the blown-out well and the continued clean up of the Gulf of Mexico on August 20, 2010 in Washington, DC. Allen thanked the press and the public for their patience with the pace of the spill response and said he wants to put "a stake in the heart" of the Macondo well four months after it began releasing an estimated 4.1 million barrels of oil into the gulf. (Photo by Chip Somodevilla/Getty Images) *** Local Caption *** Thad Allen

