America honours victims of 9/11
America fell silent to honour the victims of the September 11 attacks in a series of memorial services to commemorate the 10th anniversary of the atrocity.
In emotional scenes, the names of all those killed when terrorists flew two passenger jets into the World Trade Centre in New York were read out by family members. It took the best part of two hours for all those murdered in the attacks to be mentioned, testimony to the scale of loss caused within a similar timeframe a decade ago.
The roll call at the newly unveiled September 11 Memorial in Lower Manhattan was broken by pauses of reflection coinciding with the exact times when terrorists struck on September 11, 2001.
The first moment of silence took place at 8.46am EST (1.46pm BST), the moment when the first hijacked plane slammed into a tower at the World Trade Centre. As the bells from nearby St Paul's Chapel were tolled, September 11 families at the memorial and many among the large crowds that had travelled to the streets of Lower Manhattan bowed their heads in respect.
Around the globe, people stopped at exactly the same time at separate memorials to do likewise.
Security had been tightened in Washington and New York throughout the 10th anniversary weekend. But in central Manhattan, thoughts were not focused on the threat of a fresh attack.
Moreover, those gathered did so to pay their respects to those who lost their lives.
They were joined by president at the time of the attack George W Bush and his successor President Barack Obama, who gave a reading at the event. But his words carried less weight than those of the relatives who read out the names of the dead.
The names of all those who died in the attack - and an earlier bombing at the site in 1993 - are carved into low walls surrounding two pools of water where the towers once stood. The words will be lit up at night.
A lower-key ceremony was held at the Pentagon, where the third plane struck. Vice president Joe Biden looked moved as the American national anthem was performed, and defence secretary Leon Panetta told the congregation: "Al Qaida tried to weaken us, but instead it made us stronger."