Families remember loved ones at September 11 memorial site
Sept 11 Anniversary
Credit: AP
The World Trade Center ceremony marking the 10th anniversary of the attacks, takes place at the National September 11 Memorial, Sunday, Sept. 11, 2011 in New York. (AP Photo/Mark Lennihan)
Other Photos
Thousands pay tribute at NYC World Trade Memorial
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Memorial held for 343 firefighters lost on 9/11
Names of 9/11 victims ring out at World Trade Center site
Clinton, Boehner to raise Flight 93 memorial funds
Western Washington on Sept. 11, 2001
