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Families descend to the pit.
Mayor Bloomberg gives opening remarks.
Families lay flowers at the pools temporarily placed at the pit.
Elsie Goss-Caldwell of Philadelphia holds a photo of her son Kenneth Caldwell during a memorial ceremony. Kenneth worked on the 102nd floor of the WTC.
Alex Salamone, left, speaks as his brother, Aiden Salamone, right, and sister, Anna, center, looks on. Their father John Salamone died during the Sept. 11th attacks.
Mariko Koresada, of Japan, left, reads the names of the victims of the Sept. 11, 2001 attacks with Jean Hoffman, center. This year, the victims' names were read by family members a person from one of the 115 countries victims hailed from.
Police Commissioner Ray Kelly and Senator Hillary Clinton
Former mayor Rudy Giuliani, his wife Judith, and Mayor Bloomberg
A firefighter tips his hat.
Relatives mourn during the ceremony.
Homeland Security Secretary Michael Chertoff and NY State Public Safety head Michael Balboni
Assembly Speaker Sheldon Silver, WTC developer Larry Silverstein, and Governor David Paterson
Spectators watch the commemoration ceremony.
Parachuters descend from the sky, with American flags.