U.S. President George Bush led a moment of silence
at the White House Thursday to mark the seventh anniversary of the September 11,
2001 terrorist attacks on the United States.
The silence was observed at the moment (8:46 a.m. EDT/1246 GMT) terrorists crashed the first of two passenger jets into the World Trade Center in New York City in 2001. Another hijacked jet crashed into the Pentagon near Washington that morning, while a fourth jet crashed in a field in Pennsylvania.
Nearly 3,000 people were killed in the attacks.
New York City Mayor Bloomberg led a moment of silence in New York. After, he said on that day seven years ago lives were cut short and the entire world was less for it.
Mr. Bush delivers remarks later this morning at the unveiling of a memorial to honor the 184 people who died at the Pentagon.
U.S. presidential candidates John McCain and Barack Obama have agreed to put aside partisan campaigning Thursday. McCain is to be in Shanksville, Pennsylvania in the morning. Obama's campaign says the two candidates are to make a joint appearance at Ground Zero in New York later in the day.
Obama and McCain will speak late Thursday in New York City at a nonpartisan "ServiceNation Summit" forum to address the events of September 11 and the importance of national service.
Earlier this week, a memorial honoring the victims of the terrorist attacks was dedicated at Boston's Logan International Airport. The airport was the departure point of two of the hijacked flights.
Some information for this report was provided by AP