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Senior Airman Thomas Landon, 75th Security Forces Squadron, reads the names of fallen first responders during the 9/11 Memorial Ceremony Sept. 9, 2022, at Hill Air Force Base, Utah. The Sept. 11, 2001, attacks were one of the darkest days in U.S. history, with nearly 3,000 people killed. (U.S. Air Force photo by Cynthia Griggs)