Former first lady Laura Bush, former President George W. Bush, first lady Michelle Obama and President Barack Obama observe a moment of silence as friends and relatives of the victims of 9/11 gather for a ceremony marking the 10th anniversary of the attacks at the National September 11 Memorial at the World Trade Center site, Sunday, Sept. 11, 2011, in New York. (AP Photo/Jason DeCrow)
Former first lady Laura Bush, former President George W. Bush, first lady Michelle Obama and President Barack Obama observe a moment of silence as friends and relatives of the victims of 9/11 gather for a ceremony marking the 10th anniversary of the attacks at the National September 11 Memorial at the World Trade Center site, Sunday, Sept. 11, 2011, in New York. (AP Photo/Jason DeCrow) Associated Press
Former first lady Laura Bush, former President George W. Bush, first lady Michelle Obama and President Barack Obama observe a moment of silence as friends and relatives of the victims of 9/11 gather for a ceremony marking the 10th anniversary of the attacks at the National September 11 Memorial at the World Trade Center site, Sunday, Sept. 11, 2011, in New York. (AP Photo/Jason DeCrow) Associated Press

Sacrifice of thousands recalled in solemn 9/11 ceremonies

September 11, 2011 11:06 AM

UPDATED September 13, 2011 02:32 PM

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