Memorial ceremonies were held across the country Friday, as Americans remembered the eight anniversary of the 9/11 terrorist attacks in Washington D.C. and New York City.
President Barack Obama held a moment of silence, and later laid a wreath at the Pentagon.
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The attacks happened eight years ago on September 11, 2001. So many lives were destroyed, but one thing continues to bring people together -- the memorials dedicated to the victims and heroes of that tragic day.
At Ground Zero in New York City where the World Trade Center towers once stood, a massive steel column recovered from one of the twin towers has been returned.
"Seeing it come back just means progress. It means we are moving ahead. We are thinking about tomorrow," said Le Lelpi, whose son was killed on 9/11.
In Boston, Mass., where two of the fateful planes started that day eight years ago to Salt Lake City, Utah, where victims were honored with American flags.
"Random acts of service is probably the biggest thing we can do to show whoever wanted to destroy us that they can't," said Lori Lakason of The Field Foundation.
In New Jersey, a dual pier is patterned after the World Trade Center towers.
"I think it's very nice because it's actually sort of aimed at the area where the twin towers were," said New Jersey resident Sheila Klausner. "I know no one ever, is going to forget."
Locals in Bayonne, N.J. grieve those who lost their lives at a memorial known as the Teardrop.
"I've observed people crying. I've observed people solemn faces coming through here, said Bayonne resident Terry Ruane. "And it's so important for us not to forget what happened."
A plaque remembering the heroes of United Airlines Flight 93, the passengers and crew who fought back against the hijackers, was unveiled this week at the U.S. Capitol. Flight 93 crashed in a Pennsylvania farm field on the morning of Sept. 11, 2001 and is now a national memorial.
As Americans honor those lost on 9/11, federal officials remind everyone the threat has not ended. They are asking law enforcement authorities to be vigilant on this anniversary.