7 of 164: One of two National September 11 Memorial pools is shown Tuesday, Nov. 9, 2010 at the World Trade Center site in New York. The two memorial pools, which are scheduled to be open to the public in September 2011, reflect the location of the original twin towers. The Freedom Tower, One World Trade Center, is top center. (AP Photo/Mark Lennihan) (AP Photo/ Mark Lennihan)

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