FILE - In this Jan. 25, 2007 file photo, an unexploded 500 pound bomb sits upended where it originally fell, in an area littered with unexploded ordinance, in the live impact area of the former U.S. ... more 
FILE - In this Jan. 25, 2007 file photo, an unexploded 500 pound bomb sits upended where it originally fell, in an area littered with unexploded ordinance, in the live impact area of the former U.S. Naval Training Range, on Vieques Island, off Puerto Rico. An extensive cleanup of Vieques is underway and the Navy says it's close to finishing work on a former munitions disposal site on the island. It would be a milestone for the cleanup but the plan has sparked criticism. (AP Photo/Brennan Linsley, File) less 
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Associated Press | Photo By Brennan Linsley, File
Thu, Oct 4, 2012 5:15 PM EDT