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

NEW YORK - SEPTEMBER 11: Nina Fisher (L), sister of 9/11 victim Andrew Fisher, embraces her niece Mia Tinson, 9, 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. 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)

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A child walks amongst US national flags erected by students and staff from Pepperdine University to honour victims of the 9/11 attacks, in Malibu on September 9, 2012. The 11th anniversary of the 9/11 attacks will fall on September 11. AFP PHOTO / JOE KLAMAR (Photo credit should read JOE KLAMAR/AFP/GettyImages)

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A couple walk amongst US national flags erected by students and staff from Pepperdine University to honour victims of the 9/11 attacks, in Malibu on September 9, 2012. The 11th anniversary of the 9/11 attacks will fall on September 11. AFP PHOTO / JOE KLAMAR (Photo credit should read JOE KLAMAR/AFP/GettyImages)

9/11 Memorial Previews "In Memoriam" Exhibition

NEW YORK, NY - SEPTEMBER 10: A personal note to a young mother is displayed with other pictures of loved ones killed in the September 11 terrorist attacks that were made by family members and displayed at a preview of the National September 11 Memorial Museum's memorial exhibition on September 10, 2012 in New York City. The event, which was held by the Voices of September 11th Day of Remembrance Information Forum, featured 9/11 Memorial President Joe Daniels and 9/11 Memorial Museum Director Alice Greenwald and displayed some of the artwork that will eventually be displayed at the museum when it opens. New York City and the country are preparing for the 11th anniversary of the September 11, 2001. (Photo by Spencer Platt/Getty Images)

9/11 Memorial Previews "In Memoriam" Exhibition

NEW YORK, NY - SEPTEMBER 10: Pictures of loved ones killed in the September 11 terrorist attacks that were made by family members are displayed at a preview of the National September 11 Memorial Museum's memorial exhibition on September 10, 2012 in New York City. The event, which was held by the Voices of September 11th Day of Remembrance Information Forum, featured 9/11 Memorial President Joe Daniels and 9/11 Memorial Museum Director Alice Greenwald and displayed some of the artwork that will eventually be displayed at the museum when it opens. New York City and the country are preparing for the 11th anniversary of the September 11, 2001 . (Photo by Spencer Platt/Getty Images)

9/11 Memorial Previews "In Memoriam" Exhibition

NEW YORK, NY - SEPTEMBER 10: A personal note to firefighter Bobby King Jr. is displayed with other pictures of loved ones killed in the September 11 terrorist attacks that were made by family members and displayed at a preview of the National September 11 Memorial Museum's memorial exhibition on September 10, 2012 in New York City. The event, which was held by the Voices of September 11th Day of Remembrance Information Forum, featured 9/11 Memorial President Joe Daniels and 9/11 Memorial Museum Director Alice Greenwald and displayed some of the artwork that will eventually be displayed at the museum when it opens. New York City and the country are preparing for the 11th anniversary of the September 11, 2001. (Photo by Spencer Platt/Getty Images)

Defense Secretary Panetta Visits Flight 93 Memorial Ahead Anniversary

SHANKSVILLE, PA- SEPTEMBER 10: U.S. Secretary of Defense Leon Panetta (R) participates in a wreath-laying ceremonies commemorating the eleventh anniversary of the 9/11 attacks, September 10, 2012 in Shanksville, Pennsylvania. The September 11, 2001 attacks 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 Jeff Swensen/Getty Images)

New York Prepares To Commemorate 11th Anniversary Of September 11 Attacks

NEW YORK, NY - SEPTEMBER 10: Firefighter John Manning delivers a wreath to Engine Company 10 across from Ground Zero on the eve of the 11th anniversary of September 11 terrorist attacks on September 10, 2012 in New York City. Engine Company 10 lost six members on 9-11. New York City and the nation are preparing to commemorate the event which lead to two wars and the deaths of thousands. On Monday the federal government announced that they will add as many as 50 different types of cancers to health issues to be covered by the Zadroga 9/11 Health and Compensation Act for first responders. (Photo by Spencer Platt/Getty Images)

Defense Secretary Panetta Visits Flight 93 Memorial Ahead Anniversary

SHANKSVILLE, PA - SEPTEMBER 10: Flowers are left at the memorial wall, which bears the names of 40 victims, at the Flight 93 National Memorial prior to ceremonies commemorating the 11th anniversary of the September 11 attacks, on September 10, 2012 in Shanksville, Pennsylvania. The September 11, 2001 attacks 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 Jeff Swensen/Getty Images)

New York City's "Tribute In Light" Is Tested Night Before Sept. 11th Anniversary

NEW YORK, NY - SEPTEMBER 10: New York City's "Tribute In Light" shines into the sky over Manhattan on September 10, 2012 in New York City. The lights, in tribute to those killed in the 9/11 attacks, were tested a day before ceremonies marking the 11th anniversary of the attacks of September 11, 2001. (Photo by John Moore/Getty Images)

New York City's "Tribute In Light" Is Tested Night Before Sept. 11th Anniversary

NEW YORK, NY - SEPTEMBER 10: New York City's "Tribute In Light" to the victims of the 9/11 attacks shines from One World Trade into the sky over Manhattan on September 10, 2012 in New York City. The lights were tested a day before ceremonies marking the 11th anniversary of the attacks of September 11, 2001. (Photo by Afton Almaraz/Getty Images)

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Soldiers with the NATO-led International Security Assistance Force (ISAF) watch a screen showing 9/11 attacks during a memorial ceremony in remembrance of those who perished eleven years ago, at Kaia airport in Kabul on September 10, 2012. The war in Afghanistan, launched after the 9/11 attacks over the Taliban's alliance with Al-Qaeda, has steadily lost popular support but has generated no massive street protests or bitter debate similar to the one surrounding the Iraq conflict. A growing majority of Americans oppose the US military presence there and support NATO's plan to withdraw most combat forces by the end of 2014. AFP PHOTO/ SHAH Marai (Photo credit should read SHAH MARAI/AFP/GettyImages)

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Soldiers with the NATO-led International Security Assistance Force (ISAF) pray during a memorial ceremony in remembrance of those who perished eleven years ago in the 9/11 attacks in the US, at Kaia airport in Kabul on September 11, 2012. The war in Afghanistan, launched after the 9/11 attacks over the Taliban's alliance with Al-Qaeda, has steadily lost popular support but has generated no massive street protests or bitter debate similar to the one surrounding the Iraq conflict. A growing majority of Americans oppose the US military presence there and support NATO's plan to withdraw most combat forces by the end of 2014. AFP PHOTO/ SHAH Marai (Photo credit should read SHAH MARAI/AFP/GettyImages)

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A US soldier with the NATO-led International Security Assistance Force (ISAF) looks on during a memorial ceremony in remembrance of those who perished eleven years ago in the 9/11 attacks in the US, at Kaia airport in Kabul on September 11, 2012. The war in Afghanistan, launched after the 9/11 attacks over the Taliban's alliance with Al-Qaeda, has steadily lost popular support but has generated no massive street protests or bitter debate similar to the one surrounding the Iraq conflict. A growing majority of Americans oppose the US military presence there and support NATO's plan to withdraw most combat forces by the end of 2014. AFP PHOTO/ SHAH Marai (Photo credit should read SHAH MARAI/AFP/GettyImages)

Pentagon Holds September 11th Observance Ceremony

ARLINGTON, VA - SEPTEMBER 11: A family member of a victim of the 9/11 visits the Pentagon Memorial before a remembrance ceremony September 11, 2012 in Arlington, Virginia. U.S. President Barack Obama is scheduled to joined staff and family members at the Pentagon to commemorate the eleventh anniversary of the September 11 attacks. (Photo by Mark Wilson/Getty Images)

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

NEW YORK - SEPTEMBER 11: Scott Willens, who joined the U.S. Army three days after the terrorist attacks on 9/11, pauses by 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)

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

NEW YORK, NY - SEPTEMBER 11: The skyline rises over Lower Manhattan on the eleventh anniversary of the terrorist attacks September 11, 2012 in the Brooklyn borough of 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)

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)

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

NEW YORK - SEPTEMBER 11: A small American flag and flowers mark the rim of the South Pool of the 9/11 Memorial during 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 Craig Ruttle-Pool/Getty Images)

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

NEW YORK - SEPTEMBER 11: An honor guard carries the World Trade Center flag near the South Pool of the 9/11 Memorial during 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 Craig Ruttle-Pool/Getty Images)

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

NEW YORK - SEPTEMBER 11: A woman cries on engravings of names on the 9/11 memorial during 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 Craig Ruttle-Pool/Getty Images)

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

NEW YORK - SEPTEMBER 11: A woman cries at the 9/11 memorial during 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 Craig Ruttle-Pool/Getty Images)

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US President Barack Obama(C) speaks during a ceremony commemorating the 11th anniversary of the 9/11 attacks on September 11, 2012 at the Pentagon in Washington, DC. Looking on are Chairman of the Joint Chiefs of Staff Gen Martin Dempsey (R) and US Defense Secretary Leon Panetta (L). AFP PHOTO/Mandel NGAN (Photo credit should read MANDEL NGAN/AFP/GettyImages)

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

NEW YORK, NY - SEPTEMBER 11: A man pauses outside of the World Trade Center site on the eleventh anniversary of the terrorist attacks 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, NY - SEPTEMBER 11: John Cassidy pauses outside outside of the World Trade Center site on the eleventh anniversary of the terrorist attacks 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, NY - SEPTEMBER 11: A woman pauses outside of the World Trade Center site on the eleventh anniversary of the terrorist attacks 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, NY - SEPTEMBER 11: A woman walks with a picture of a loved one outside of the World Trade Center site on the eleventh anniversary of the terrorist attacks 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, NY - SEPTEMBER 11: People pause outside of the World Trade Center site on the eleventh anniversary of the terrorist attacks 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, NY - SEPTEMBER 11: People walk near 1 World Trade outside of the World Trade Center site on the eleventh anniversary of the terrorist attacks 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, NY - SEPTEMBER 11: A man pauses outside of the World Trade Center site on the eleventh anniversary of the terrorist attacks 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)

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A woman sits on a bench before the start of a ceremony commemorating the 11th anniversary of the 9/11 attacks on September 11, 2012 at the Pentagon in Washington, DC. AFP PHOTO/Mandel NGAN (Photo credit should read MANDEL NGAN/AFP/GettyImages)

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US President Barack Obama (R) , First Lady Michelle Obama (L), and Defense Secretary Leon Panetta pay their respects in front of a wreath during a ceremony commemorating the 11th anniversary of the 9/11 attacks on September 11, 2012 at the Pentagon in Washington, DC. AFP PHOTO/Mandel NGAN (Photo credit should read MANDEL NGAN/AFP/GettyImages)

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

NEW YORK - SEPTEMBER 11: People look at the names engraved into 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. 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)