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Vasantha Velamuri, who's husband, Sankara Sastry Velamuri, was killed in the 9/11 terrorist attacks on the World Trade Center, mourns at the place where his name is inscribed on the Sept. 11 memorial at the World Trade Center site in New York during a ceremony to mark the 10th anniversary of the attacks Sunday, Sept. 11, 2011. (AP Photo/Carolyn Cole, Pool)

Memorable moments: Ground Zero memorial ceremony

A collection of moments from the 9/11 anniversary memorial ceremony in New York.