In pictures: 9/11 ceremony
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The ceremony was held under a brilliant blue sky reminiscent of the day of the attacks four years ago. -
A member of the New York City Fire Department rang a bell to mark moments of silence. -
The pain of the loss is still keenly felt by relatives and friends four years on. -
One woman wept over fire chief Louis Joseph Modafferi, who died when the towers collapsed. -
Many of those who lost relatives or loved ones were overcome with emotion. -
Mourners brought flowers to place in two special pools in memory of those lost. -
People made the journey down a ramp to the "footprint" of the former World Trade Center. -
The commemoration came as the US was dealing with the pain of Hurricane Katrina's destruction in southern states. -
The names of nearly 3,000 people killed in the attacks were read out in front of grieving relatives. -
US Secretary of State Condoleezza Rice met with police - colleagues of some of those killed in the 2001 attacks. -
so sad..
