NEW YORK – SEPTEMBER 07: An American flag t-shirt covered in ash and dust from the destroyed World Trade Center towers is seen at a media preview of the ?Elegy in the Dust: Sept. 11th and the Chelsea Jeans Memorial? exhibit at the New York Historical Society September 7, 2006 in New York City. The exhibit features racks of clothes covered in dust from the Chelsea Jeans store in Lower Manhattan that were preserved by owner David Cohen as a memorial. The fifth anniversary will be obsserved of the September 11. (Photo by Mario Tama/Getty Images)