Across the United States, people are remembering the fallen and honoring the lives reshaped by the Sept. 11, 2001, terror attack. Nearly 3,000 people were killed 23 years ago as 19 al-Qaida hijackers seized control of four jetliners, sending two of the planes into New York’s World Trade Center, one into the Pentagon in Arlington, Virginia, and the fourth into a field in western Pennsylvania. It remains the deadliest terror attack in history.
In Photos: US honors fallen on 23rd anniversary of 9/11
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American flags are displayed next to a cross commemorating those killed when hijacked Flight 93 crashed into an open field on Sept. 11, 2001, in Shanksville, Pennsylvania, Sept. 11, 2024.

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A member of the National Park Service brings a wreath out to the crash site at the Flight 93 National Memorial on the 23rd anniversary of the terror attacks in Shanksville, Pennsylvania, Sept. 11, 2024.

3
Vice President Kamala Harris, President Joe Biden, former New York City mayor Michael Bloomberg, Republican presidential candidate Donald Trump and Republican vice presidential candidate JD Vance attend a 9/11 memorial ceremony in New York, Sept. 11, 2024.

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People gather at a ceremony marking the 23rd anniversary of the 9/11 terror attacks at the National September 11 Memorial & Museum, in New York, Sept. 11, 2024.