Americans are remembering 9/11 with moments of silence, readings of victims' names, volunteer work and other tributes 21 years after the deadliest terror attack on U.S. soil. Victims’ relatives and dignitaries convene at the places where hijacked jets crashed on Sept. 11, 2001 — the World Trade Center in New York, the Pentagon and a field in Pennsylvania.
21st Anniversary of 9/11 Terror Attacks in Photos

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First responders salute as a U.S. flag is unfurled at the Pentagon in Washington, Sept. 11, 2022, at sunrise on the morning of the 21st anniversary of the 9/11 terrorist attacks.

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President Joe Biden participates in a wreath laying ceremony while visiting the Pentagon in Washington, Sept. 11, 2022, to honor and remember the victims of the September 11th terror attack.

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A bell is rung during a ceremony at the Pentagon in Washington, Sept. 11, 2022, to honor and remember the victims of the 9/11 terror attack.

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Family members attend a ceremony at the Pentagon in Washington, Sept. 11, 2022, to honor and remember the victims of the 9/11 terror attack.