FILE - In this Aug. 24, 2011 file photo, lifeguards keep watch over the beach along the Cape Hatteras National Seashore in Buxton, N.C. A report released Tuesday, May 20, 2014 by the Union of Concerned Scientists says that the Cape Hatteras Lighthouse is one of two dozen landmarks nationwide threatened by rising sea levels. (AP Photo/Gerry Broome, file)
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