9/11 Remembered

U.S. Marines stand in formation to observe a moment of silence held at the time of the Sept. 11, 2001 attacks against the U.S., in memory of the victims, at Forward Operating Base Jackson, in Sangin, Helmand province, Afghanistan, Sunday, Sept. 11, 2011. Ten years have passed since the deadly 9/11 attacks that led the United States to wage war in Afghanistan. (AP Photo/Brennan Linsley)

President Barack Obama touches the names etched into the memorial wall during his visit to the North Memorial Pond at the National Sept. 11th Memorial Sunday, Sept., 11, 2011 in New York. (AP Photo/Pablo Martinez Monsivais)

Members of the group 'Muslims against Crusades' attempt to burn a U.S. flag during an anti U.S. rally, held close to the memorial ceremony to mark the 10th anniversary of the Sept. 11, 2001 attacks at the Memorial Garden, adjacent to the U.S. Embassy, central London, Sunday Sept. 11, 2011. (AP Photo/Lefteris Pitarakis)

A memorial of 403 flags honoring New York firemen, police and Port Authority members who died in the 9/11 attacks was set up in the Christ Church courtyard in New Bern, NC, on Sept. 11, 2011. (AP Photo/New Bern Sun Journal, Byron Holland).

The CEO of Habitat for Humanity, Danny Herron, speaks to a group of volunteers in Nashville, Tenn. on Sunday, Sept. 11, 2011. The daylong construction project was part of the National Day of Service and Remembrance, an effort launched in 2002 by family members of Sept. 11 victims. (AP Photo/Josh Anderson

Former President George W. Bush, far right, speaks to friends and relatives of the victims of 9/11 as former first lady Laura Bush, from left, first lady Michelle Obama and President Barack Obama listen during 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)

Julie Jalbert Pitt, who's father, Robert Adrien Jalbert, was killed in the Sept. 11 terrorist attacks at the World Trade Center, holds her 8 month old daughter, Campbell Pitt, next to the name of her father during a ceremony marking the 10th anniversary of the attacks Sunday, Sept. 11, 2011, in New York. (AP Photo/Carolyn Cole, Pool)

A woman touches the names inscribed around the north reflecting pool of the Sept. 11 memorial during 10th anniversary ceremonies at the site, Sunday Sept. 11, 2011, in New York. (AP Photo/Justin Lane, Pool)

Family members pay respects in front of one of the two waterfall pools during a ceremony marking the 10th anniversary of the World Trade Center attacks, at the National September 11 Memorial at the World Trade Center site Sunday, Sept. 11, 2011, in New York. (AP Photo/Matt Rourke)

U.S. soldiers salute during an event to mark the 10th anniversary of the Sept. 11, 2011 attacks on the United States, at the U.S. of Bagram north of Kabul, Afghanistan Sunday, Sept. 11, 2011. (AP Photo/Musadeq Sadeq)

A police officer looks down at the wall of the south memorial pool of the National September 11 Memorial during a ceremony to mark the 10th anniversary of the attacks on the World Trade Center Sunday, Sept. 11, 2011, in New York. (AP Photo/Timothy A. Clary, Pool)

Rita Agnelo touches the name of her son, Joseph Agnelo, who was killed on during the Sept. 11, 2001 World Trade Center attacks, as she attends 10th anniversary ceremonies at the Sept. 11 site, in New York, Sunday, Sept. 11, 2011. (AP Photo/Seth Wenig, Pool)

Two presidents and their wives stand at attention as the National Anthem is played, Sunday, Sept. 11, 2011 in New York, during the 10th anniversary observance of the terrorist attacks on the World Trade Center. From left is former first lady Laura Bush, former U.S. President George W. Bush, first lady Michelle Obama and U.S. President Barack Obama. (AP Photo/Allan Tannenbaum, Pool)

Religious leaders attend a ceremony to commemorate the 10th anniversary of the Sept. 11, 2001 terror attacks in Munich, southern Germany, Sunday, Sept. 11, 2011. (AP Photo/Matthias Schrader)

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)