PHOTO: EAST NEWS/AFP A woman covered in dust takes refuge in an office building after the top of one of the World Trade Center towers collapsed after two planes crashed into each building 11 September, 2001, in New York. The woman was caught outside on the street as the cloud of smoke and dust enveloped the area.

PHOTO: AFP/EAST NEWS (FILES): This newly released aerial photograph made on September 11, 2001 by the New York City Police Department and provided on February 10, 2010 by ABC News shows the collapsing World Trade Center in New York following attacks by terrorists who flew two airliners into the towers. This and other aerial photos from the 9/11 attacks were obtained by ABC News, who in 2009 filed a Freedom of Information Act request with the National Institute of Standards and Technology. CREDIT MANADTORY: Courtesy of ABC News / NYPD / Detective Greg Semendinger via AFP == RESTRICTED TO EDITORIAL USE / PRINT MEDIA ONLY / NO SALES / NO ARCHIVES / NO SUB-LICENSING ==

PHOTO: EAST NEWS/AFP The rubble of the World Trade Center smoulders following a terrorist attack 11 September 2001 in New York. A hijacked plane crashed into and destroyed the landmark structure. 00433152

(FILES) This September 11, 2001 file photo shows a hijacked commercial plane crashing into the World Trade Center in New York. September 11, 2011 will mark the tenth anniversary of the attacks in which nearly 3,000 people were killed, 2,753 at the World Trade Center and the others in attacks on the Pentagon and in a hijacked plane that crashed in Pennsylvania. AFP PHOTO / SETH MCALLISTER / FILES== FOR NEWSPAPERS, INTERNET, TELCOS & TELEVISION USE ONLY ==

TO GO WITH AFP STORY by Sebastian Smith, US-attacks-911-anniversary-conspiracy (FILES): Rescue workers survey damage to the World Trade Center in this September 11, 2001 file photo in New York. Perhaps the attack was just too huge to comprehend, or the Twin Towers' collapse looked too much like a Hollywood epic, but even 10 years later, many people believe 9/11 was an elaborate conspiracy involving anyone from Israeli agents to the US government itself. AFP PHOTO/Doug KANTER/FILES

World Trade Center Attacks - Fireman and rescue workers go through rubble & wreckage looking for survivors. Impaled pieces of WTC are embedded into wreckage. September 13, 2001.

A firefighter walks through rubble of the twin towers of the World Trade Center as a US flag hangs from a traffic light post 11 September, 2001, in New York. Two planes controlled by hijackers crashed into the buildings, destroying both. AFP PHOTO Doug KANTER

A firefighter walks through rubble of the twin towers of the World Trade Center as a US flag hangs from a traffic light post 11 September, 2001, in New York. Two planes controlled by hijackers crashed into the buildings, destroying both. AFP PHOTO Doug KANTER

Firefighters take a break at the remains of the twin towers of the World Trade Center in lower Manhattan 11 September, 2001, in New York after two planes controlled by hijackers flew into the buildings. A New York city firefighters' union reported that 200 firefighters died in the collapse. AFP PHOTO Doug KANTER

World Trade Center Attacks - Ground Zero wreckage of WTC. September 13, 2001.

PHOTO: AFP/EAST NEWS (FILES): This newly released aerial photograph made on September 11, 2001 by the New York City Police Department and provided on February 10, 2010 by ABC News shows the collapsing World Trade Center in New York following attacks by terrorists who flew two airliners into the towers. This and other aerial photos from the 9/11 attacks were obtained by ABC News, who in 2009 filed a Freedom of Information Act request with the National Institute of Standards and Technology. CREDIT MANADTORY: Courtesy of ABC News / NYPD / Detective Greg Semendinger via AFP == RESTRICTED TO EDITORIAL USE / PRINT MEDIA ONLY / NO SALES / NO ARCHIVES / NO SUB-LICENSING ==

PHOTO: AFP/EAST NEWS (FILES): This newly released aerial photograph made on September 11, 2001 by the New York City Police Department and provided on February 10, 2010 by ABC News shows the World Trade Center in New York following attacks by terrorists who flew two airliners into the towers. This and other aerial photos from the 9/11 attacks were obtained by ABC News, who in 2009 filed a Freedom of Information Act request with the National Institute of Standards and Technology. CREDIT MANADTORY: Courtesy of ABC News / NYPD / Detective Greg Semendinger via AFP == RESTRICTED TO EDITORIAL USE / NO SALES / NO ARCHIVES / NO SUB-LICENSING ==

PHOTO: AFP/EAST NEWS (FILES): This newly released aerial photograph made on September 11, 2001 by the New York City Police Department and provided on February 10, 2010 by ABC News shows the collapsing World Trade Center in New York following attacks by terrorists who flew two airliners into the towers. This and other aerial photos from the 9/11 attacks were obtained by ABC News, who in 2009 filed a Freedom of Information Act request with the National Institute of Standards and Technology. CREDIT MANADTORY: Courtesy of ABC News / NYPD / Detective Greg Semendinger via AFP == RESTRICTED TO EDITORIAL USE / PRINT MEDIA ONLY / NO SALES / NO ARCHIVES / NO SUB-LICENSING ==

World Trade Center Attacks - Fireman and rescue workers go through rubble & wreckage looking for survivors. Impaled pieces of WTC are embedded into wreckage. September 13, 2001.

PHOTO: EAST NEWS/AFP Beams from the destroyed World Trade Center are in the shape of a cross and a US flag is reflected in the glass of the new 7 World Trade Center on 11 September, 2006 in New York. Today marks the fifth anniversary of the attacks on the World Trade Center.

PHOTO: AFP/EAST NEWS (FILES)The first tower of the World Trade Center collapses after being hit by a hijacked commercial aircraft 11 September 2001 in New York. September 11, 2008 marks the seventh anniversay of the terrorist attacks in New York City, at the Pentagon, and in Shanksville, Pennsylvania. AFP PHOTO/Helene SELIGMAN

PHOTO: EAST NEWS/AFP Smoke billows out of the burning World Trade Center towers while a sightseeing boat goes by on the East River in New York 11 September, 2001. Two hijacked passengers planes were flown into the buildings in a suspected terrorist attack. Both towers have collapsed.

PHOTO: EAST NEWS/AFP Pedestrians on the waterfront in Brooklyn, New York, look across the East River to the burning World Trade Center towers 11 September, 2001 after a terrorist attack. AFP PHOTO

September 11th 2001 terrorist attack on New York's World Trade Center. Approximately 10:20am. A worker tries to make a call from a payphone outside the Stage Door Deli on Vesey street.

September 11th 2001 terrorist attack on New York's World Trade Center. The Stage Door deli. Patty Mack, a court officer who had just escaped from the rubble of the South Tower calls in on her radio.