9/11 tribute

Family members of victims pay their respects Photograph: Gary Hershorn/Reuters

People watch the ceremony from Broadway Photograph: Stephen Chernin/AP

Friends and relatives of the victims gather during the playing of the national anthem at Zuccotti park Photograph: Frank Franklin II/AP

The mayor of New York city, Michael Bloomberg, speaks during the seventh annual 9/11 commemoration ceremony Photograph: Rick Gershon/Getty

A mourner holds a picture of a victim of the 9/11 attacks Photograph: Chris Hondros/Getty

Friends and family members drop flowers in a reflecting pool in honour of those who lost their lives Photograph: Mark Lennihan/AP

Crowd scene at the New York commemoration in Zuccotti park Photograph: Daniel Acker/AFP

Flags fly at half mast above a group of people watching the ceremony Photograph: Stephen Chernin/AP

George Kousoulis, who lost his daughter Danielle Photograph: Timothy A Clary/AFP

The sun rises over the main stage before the start of the Pentagon ceremony Photograph: Master Stg Adam Stump/US Air/EPA

A bugler plays a salute over an American flag hanging on the wall of the Pentagon Photograph: Gerald Herbert/AP

A man walks through a flag memorial at the Pentagon Photograph: Susan Walsh/AP

George Bush, Laura Bush, vice-president Dick Cheney and Lynne Cheney participate in a moment of silence Photograph: Alex Wong/Getty

Guests listen to the calling out of names Photograph: Gerald Herbert/AP

Family members of the victims of the 9/11 terrorist attack on the Pentagon observe a moment of silence Photograph: Matthew Cavanaugh/EPA

Members of a joint service honour guard prepare to raise the flag during the Pentagon ceremony Photograph: Defense Dept Mass Communication Specialist 1st Class Chad McNeeley, US Navy/AP

A crucifix hangs from the arm of a cross at the flight 93 temporary memorial outside Shanksville, Pennsylvania Photograph: Jason Cohn/Reuters

A man visits the temporary flight 93 memorial in Shanksville Photograph: Gene J Puskar/AP

Visitors at a sunrise memorial Photograph: Gene J Puskar/AP