First responders work at ground zero after the Sept.11 attacks, Sept. 12, 2001, in New York. Americans are looking back on the horror and legacy of 9/11, gathering Monday, Sept. 11, 2023, at memorials, firehouses, city halls and elsewhere to observe the 22nd anniversary of the deadliest terror attack on U.S. soil. (AP Photo/Suzanne Plunkett, File)
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