What we know about Sept. 11 remembrance events:

Thursday marks 24 years since Sept. 11, 2001, when 2,977 people were killed in terrorist attacks on New York's World Trade Center, the Pentagon and a plane that crashed in Shanksville, Pennsylvania.

President Trump attended the ceremony at the Pentagon, noting that "an entire generation of Americans have come of age in a totally different world" but "they are carrying on the legacy of those" who died.

In New York, families of the Sept. 11 victims participated in the annual reading of the names at Ground Zero , where the World Trade Center's Twin Towers collapsed. More than 2,700 of those killed on Sept. 11 died in that attack.

Vice President JD Vance canceled his planned trip to New York, a source said, to instead go to Utah, wher

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