*NOTES*
WTC15 - The wreckage of the World Trade Center smoulders in this picture taken September 15, 2001. REUTERS/NY Office of Emergency Management
WTC16 - This photo released by the New York City Office of Emergency Management shows an aerial view of the World Trade Center on Saturday, Sept. 15, 2001. The dates the aerial photos were taken was supplied by the source. (AP Photo/pool, NYC Office of Emergency Management)
WTC17 - The setting sun lights the buildings of the World Financial Center as smoke continues to pour out of the site of the World Trade Center tragedy in this view of Manhattan from across the Hudson River in Jersey City, New Jersey, Sept 16, 2001. (Ray Stubblebine/Reuters)
WTC18 The skyline of Manhattan, with and without the World Trade towers, is seen from Brooklyn in these photos taken Wednesday, Sept. 12, 2001, top, and Aug. 14, 2000, bottom. The smoke in the top photo is from fires still burning in the rubble of what was once the site of the towers. (AP Photos/Kathy Willens, Fernando Llano)
WTC19 This series of photographs shows hijacked United Airlines Flight 175 as it approaches (upper L) and impacts the World Trade Center's south tower (L), bursting into flames and raining a hail of debris on lower Manhattan September 11, 2001. A gaping hole in the north tower (R) can be seen following a similar attack earlier in the day. REUTERS/Sean Adair
WTC20 A jet airliner is lined up on one of the World Trade Center towers in New York Tuesday, Sept. 11, 2001. In the most devastating terrorist onslaughts ever waged against the United States, knife-wielding hijackers crashed two airliners into the World Trade Center on Tuesday, toppling its twin 110-story towers. (AP Photo/Carmen Taylor)
WTC21 People run down Broadway as a smoke and dust cloud comes up the street from the collapsing World Trade Center buildings in New York September 11, 2001. (Kelly Price/Reuters)
WTC22 A fireball explodes from one of the World Trade Center towers after a jet airliner crashed into the building Tuesday, Sept. 11, 2001, in New York. (AP Photo/Carmen Taylor)
WTC23 FILE--The twin towers of the World Trade Center rise above the New York skyline in this June 23, 1999 file photo. (AP Photo/File, Ed Bailey)
WTC24 Rescue workers drive an all-terrain vehical carrying an American flag in front of the remains of the World Trade Center, Monday, Sept. 17, 2001, in New York. (AP Photo by Ted Warren)

