In this Sunday, Sept. 22, 2013 photo, a US flag is placed at the north reflecting pool of the 9/11 Memorial at the site of the 9/11 attacks on the World Trade Center in New York. (AP Photo/Lefteris Pitarakis)
In this Sunday, Sept. 22, 2013 photo, a US flag is placed at the north reflecting pool of the 9/11 Memorial at the site of the 9/11 attacks on the World Trade Center in New York. (AP Photo/Lefteris Pitarakis)
AP Images Blog 