New York City Marks 11th Anniversary Of September 11th Attacks

NEW YORK - SEPTEMBER 11: Port Authority Police Officers carry an American flag that flew over at the World Trade Center towers during memorial ceremonies for the eleventh anniversary of the terrorist attacks on lower Manhattan at the World Trade Center site September 11, 2012 in New York City. New York City and the nation are commemorating the eleventh anniversary of the September 11, 2001 attacks which resulted in the deaths of nearly 3,000 people after two hijacked planes crashed into the World Trade Center, one into the Pentagon in Arlington, Virginia and one crash landed in Shanksville, Pennsylvania. (Photo by Justin Lane-Pool/Getty Images)

New York City Marks 11th Anniversary Of September 11th Attacks

NEW YORK - SEPTEMBER 11: Alicia Watkins, of Washington, DC, makes a rubbing of a friend's name at the South Pool during memorial ceremonies for the eleventh anniversary of the terrorist attacks on lower Manhattan at the World Trade Center site September 11, 2012 in New York City. New York City and the nation are commemorating the eleventh anniversary of the September 11, 2001 attacks which resulted in the deaths of nearly 3,000 people after two hijacked planes crashed into the World Trade Center, one into the Pentagon in Arlington, Virginia and one crash landed in Shanksville, Pennsylvania. (Photo by Justin Lane-Pool/Getty Images)

New York City Marks 11th Anniversary Of September 11th Attacks

NEW YORK - SEPTEMBER 11: Fire and police officers hold a large American flag before the start of the memorial ceremonies for the eleventh anniversary of the terrorist attacks on lower Manhattan at the World Trade Center site September 11, 2012 in New York City. The nation is commemorating the eleventh anniversary of the September 11, 2001 attacks which resulted in the deaths of nearly 3,000 people after two hijacked planes crashed into the World Trade Center, one into the Pentagon in Arlington, Virginia and one crash landed in Shanksville, Pennsylvania. (Photo by Todd Maidel-Pool/Getty Images)

New York City Marks 11th Anniversary Of September 11th Attacks

NEW YORK - SEPTEMBER 11: A woman takes a rubbing of a name of a loved one inscribed on the reflecting pool before the start of the memorial ceremonies for the eleventh anniversary of the terrorist attacks on lower Manhattan at the World Trade Center site September 11, 2012 in New York City. The nation is commemorating the eleventh anniversary of the September 11, 2001 attacks which resulted in the deaths of nearly 3,000 people after two hijacked planes crashed into the World Trade Center, one into the Pentagon in Arlington, Virginia and one crash landed in Shanksville, Pennsylvania. (Photo by Todd Maidel-Pool/Getty Images)

New York City Marks 11th Anniversary Of September 11th Attacks

NEW YORK - SEPTEMBER 11: People take a rubbing of a name of a loved-one inscribed on one of the reflecting pools before the start of the memorial ceremonies for the eleventh anniversary of the terrorist attacks on lower Manhattan at the World Trade Center site September 11, 2012 in New York City. New York City and the nation are commemorating the eleventh anniversary of the September 11, 2001 attacks which resulted in the deaths of nearly 3,000 people after two hijacked planes crashed into the World Trade Center, one into the Pentagon in Arlington, Virginia and one crash landed in Shanksville, Pennsylvania. (Photo by Todd Maidel-Pool/Getty Images)

New York City Marks 11th Anniversary Of September 11th Attacks

NEW YORK - SEPTEMBER 11: Judy Parisio (R) and Linda Malbrba make a rubbing of their niece's name, Frances Ann Cilente, who died at the World Trade Center, during memorial ceremonies for the eleventh anniversary of the terrorist attacks on lower Manhattan at the World Trade Center site September 11, 2012 in New York City. New York City and the nation are commemorating the eleventh anniversary of the September 11, 2001 attacks which resulted in the deaths of nearly 3,000 people after two hijacked planes crashed into the World Trade Center, one into the Pentagon in Arlington, Virginia and one crash landed in Shanksville, Pennsylvania. (Photo by Chang W. Lee-Pool/Getty Images)

New York City Marks 11th Anniversary Of September 11th Attacks

NEW YORK - SEPTEMBER 11: Dennis Swindell kisses the name of his partner Gary Lee Bright inscribed on the South Tower memorial pool wall during observances for the eleventh anniversary of the terrorist attacks on lower Manhattan at the World Trade Center site September 11, 2012 in New York City. The nation is commemorating the eleventh anniversary of the September 11, 2001 attacks which resulted in the deaths of nearly 3,000 people after two hijacked planes crashed into the World Trade Center, one into the Pentagon in Arlington, Virginia and one crash landed in Shanksville, Pennsylvania. (Photo by Timothy A. Clary-Pool/Getty Images)

US-ATTACKS-911 ANNIVERSARY-OBAMA

US President Barack Obama and US first lady Michelle Obama arrive for a moment of silence on the South Lawn of the White House September 11, 2012 in Washington, DC. The moment of silence was held on the 11th anniversary of the September 11th terrorist attacks on the United States to honor its victims. AFP PHOTO/Brendan SMIALOWSKI (Photo credit should read BRENDAN SMIALOWSKI/AFP/GettyImages)

New York City Marks 11th Anniversary Of September 11th Attacks

NEW YORK - SEPTEMBER 11: An American flag is stuck in a plaque of names of the victims of the September 11 attacks at the North Pool memorial during observances for the eleventh anniversary of the terrorist attacks on lower Manhattan at the World Trade Center site September 11, 2012 in New York City. The nation is commemorating the eleventh anniversary of the September 11, 2001 attacks which resulted in the deaths of nearly 3,000 people after two hijacked planes crashed into the World Trade Center, one into the Pentagon in Arlington, Virginia and one crash landed in Shanksville, Pennsylvania. (Photo by Mike Segar-Pool/Getty Images)

New York City Marks 11th Anniversary Of September 11th Attacks

NEW YORK - SEPTEMBER 11: Christine Gonda places a picture of firefighter George Kane in the engraving of his name at the South Pool during memorial ceremonies for the eleventh anniversary of the terrorist attacks on lower Manhattan at the World Trade Center site September 11, 2012 in New York City. New York City and the nation are commemorating the eleventh anniversary of the September 11, 2001 attacks which resulted in the deaths of nearly 3,000 people after two hijacked planes crashed into the World Trade Center, one into the Pentagon in Arlington, Virginia and one crash landed in Shanksville, Pennsylvania. (Photo by Justin Lane-Pool/Getty Images)

New York City Marks 11th Anniversary Of September 11th Attacks

NEW YORK - SEPTEMBER 11: A firefighter's hat sits on names of firefighters at the South Pool during memorial ceremonies for the eleventh anniversary of the terrorist attacks on lower Manhattan at the World Trade Center site September 11, 2012 in New York City. New York City and the nation are commemorating the eleventh anniversary of the September 11, 2001 attacks which resulted in the deaths of nearly 3,000 people after two hijacked planes crashed into the World Trade Center, one into the Pentagon in Arlington, Virginia and one crash landed in Shanksville, Pennsylvania. (Photo by Justin Lane-Pool/Getty Images)

President Obama And First Lady Observe Moment Of Silence In Remembrance Of 9/11 Attacks

WASHINGTON, DC - SEPTEMBER 11: U.S. President Barack Obama (L) and first lady Michelle Obama (R) observe a moment of silence with White House staff to mark the 11th anniversary of the 9/11 attacks September 11, 2012 at the South Lawn of the White House in Washington, DC. The nation is commemorating the eleventh anniversary of the September 11, 2001 attacks which resulted in the deaths of nearly 3,000 people after two hijacked planes crashed into the World Trade Center, one into the Pentagon in Arlington, Virginia and one crash landed in Shanksville, Pennsylvania. (Photo by Alex Wong/Getty Images)

President Obama And First Lady Observe Moment Of Silence In Remembrance Of 9/11 Attacks

WASHINGTON, DC - SEPTEMBER 11: U.S. President Barack Obama (L) and first lady Michelle Obama (R) observe a moment of silence with White House staff to mark the 11th anniversary of the 9/11 attacks September 11, 2012 at the South Lawn of the White House in Washington, DC. The nation is commemorating the eleventh anniversary of the September 11, 2001 attacks which resulted in the deaths of nearly 3,000 people after two hijacked planes crashed into the World Trade Center, one into the Pentagon in Arlington, Virginia and one crash landed in Shanksville, Pennsylvania. (Photo by Alex Wong/Getty Images)

New York City Marks 11th Anniversary Of September 11th Attacks

NEW YORK, NY - SEPTEMBER 11: People pause outside of the World Trade Center site on the eleventh anniversary of the terrorist on September 11, 2012 in New York City. New York City and the nation are commemorating the eleventh anniversary of the September 11, 2001 attacks which resulted in the deaths of nearly 3,000 people after two hijacked planes crashed into the World Trade Center, one into the Pentagon in Arlington, Virginia and one crash landed in Shanksville, Pennsylvania. (Photo by Spencer Platt/Getty Images)

New York City Marks 11th Anniversary Of September 11th Attacks

NEW YORK - SEPTEMBER 11: A family member sticks a flag in the name of Frances Ann Cilente, during memorial ceremonies for the eleventh anniversary of the terrorist attacks on lower Manhattan at the World Trade Center site September 11, 2012 in New York City. New York City and the nation are commemorating the eleventh anniversary of the September 11, 2001 attacks which resulted in the deaths of nearly 3,000 people after two hijacked planes crashed into the World Trade Center, one into the Pentagon in Arlington, Virginia and one crash landed in Shanksville, Pennsylvania. (Photo by Chang W. Lee-Pool/Getty Images)

New York City Marks 11th Anniversary Of September 11th Attacks

NEW YORK - SEPTEMBER 11: An American flag sits in the name of Frances Ann Cilente during memorial ceremonies for the eleventh anniversary of the terrorist attacks on lower Manhattan at the World Trade Center site September 11, 2012 in New York City. New York City and the nation are commemorating the eleventh anniversary of the September 11, 2001 attacks which resulted in the deaths of nearly 3,000 people after two hijacked planes crashed into the World Trade Center, one into the Pentagon in Arlington, Virginia and one crash landed in Shanksville, Pennsylvania. (Photo by Chang W. Lee-Pool/Getty Images)

Memorial Held At World Trade Center Site On 11th Anniversary Of Sept. 11 Attacks

NEW YORK, NY - SEPTEMBER 11: Tina Grazioso (L) looks upon the name of her slain husband John Grazioso at the 9/11 Memorial during ceremonies for the eleventh anniversary of the terrorist attacks on lower Manhattan at the World Trade Center on September 11, 2012 in New York City. At right is John Grazioso's sister Carolee Azzarello. New York City and the nation are commemorating the eleventh anniversary of the September 11, 2001 attacks which resulted in the deaths of nearly 3,000 people after two hijacked planes crashed into the World Trade Center, one into the Pentagon in Arlington, Virginia and one crash landed in Shanksville, Pennsylvania. (Photo by John Moore/Getty Images/POOL)