U.S. marks 23rd anniversary of 9/11 terrorist attacks (31 images)

By Wade Sheridan

Americans marked the 23rd anniversary of the September 11, 2001, terrorist attacks on Wednesday with memorials and commemoration ceremonies in New York City, at the Pentagon and in Pennsylvania, where hijacked planes crashed. Nearly 3,000 people were killed in the worst-ever terrorist attack on U.S. soil.

A firefighter from Atlantic Beach, N.Y., places flowers on the South Tower reflecting pool before the start of the 911 Commemoration Ceremony at the National September 11th Memorial and Museum in New York City on September 11, 2024. Photo by Peter Foley/UPI

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A woman places flags on the South Tower reflecting pool. Photo by Peter Foley/UPI

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A lone white rose has been placed on the South Tower reflecting pool. Photo by Peter Foley/UPI

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President Joe Biden and Vice President Kamala Harris attend the start of the 9/11 Commemoration Ceremony. Photo by Peter Foley/UPI

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