Americans on Tuesday are marking the 17th anniversary of the Sept. 11, 2001 terrorist attacks that killed almost 3,000 people in New York, Virginia and Pennsylvania
US Marks 17th Anniversary of 9/11 Attacks

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A woman carries a photo of Wilder Gomez who was a bartender at Windows on the World on the 103rd floor of the World Trade Center, during the 17th anniversary of the terrorist attacks on the United States, Sept. 11, 2018, in New York.

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Visitors to the Flight 93 National Memorial in Shanksville, Pa., participate in a sunset memorial service, Sept. 10, 2018, as the nation marks the 17th anniversary of the Sept. 11, 2001 attacks.

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Bianca Burton, center left, and Erin Schultheis walk around the Pepperdine University's annual display of flags honoring the victims of the 9/11 terrorist attacks, Sept. 10, 2018, in Malibu, California.