Retired Marine Dan O'Connor displays his patriotism on his prosthetic leg as he visits the World Trade Center site, Saturday, Sept. 10, 2011, in New York, as officials prepare for the 10th anniversary of the 9/11 attacks. (AP Photo/The Dallas Morning News, Louis DeLuca)  MANDATORY CREDIT; MAGS OUT; TV OUT; INTERNET OUT; AP MEMBERS ONLY Photo: AP