The world's largest free-flying flag hangs from the south side of One World Trade Center on September 10, 2011 in New York City. (Photo by Andrew Burton/Getty Images)

The day before the tenth anniversary of the September 11 attacks on New York and Washington, Christian preacher Terry Jones (C) lectures a crowd in Times Square about his strong critisim of Islam, on September 10, 2011 in New York City. Calling Islam a “false religion”, a radical Jones supervised the burning of a Koran, the holy book of Islam, on March 20, 2011. In response to the buring of the Koran, protestors in the northern Afghanistan city of Mazar-i-Sharif attacked a United Nations Assistance Mission, killing at least 12 people, including at least 7 U.N. workers. (Photo by Chip Somodevilla/Getty Images)

A man takes a photo of One World Trade at the World Trade Center site on September 10, 2011 in New York City. (Photo by Justin Sullivan/Getty Images)

The 1 World Trade Center (4th L) stands as construction continues at the World Trade Center site on September 7, 2011 in New York City. (Photo by Spencer Platt/Getty Images)

Lighting Designer Frank Hollenkamp uses his iPad to shoot video of the Tribute in Lights ahead of the tenth anniversary of the September 11 terrorist attacks on September 7, 2011 in New York City. The Tribute in Light is comprised of 88 1-degree beams of 7000 watt searchlights focused into the sky near the site of the World Trade Center in remembrance of the September 11 attacks. (Photo by Andreas Gebhard/Getty Images)

Workers adjust beams of the Tribute in Lights ahead of the tenth anniversary of the September 11 terrorist attacks on September 7, 2011 in New York City. (Photo by Justin Sullivan/Getty Images)

The Tribute in Light is seen behind the Empire State Building on September 10, 2011 in New York City. The Tribute in Light is an art installation honoring those who perished in the 9/11 attacks. New York City and the nation are preparing for the tenth anniversary of the terrorist attacks on lower Manhattan which resulted in the deaths of 2,753 people at the World Trade Center. (Photo by Mario Tama/Getty Images)