Members of the 433rd Civil Engineer Squadron climb the stairs outside the Pfingston Reception Center on Joint Base San Antonio-Lackland, Texas on Sep. 10, 2023 as part of an annual 9/11 Memorial Stair Climb. The commemorative event honors first responders killed during the Sept. 11, 2001 terror attacks by having Airmen climb up the equivalent of the 110 stories of the World Trade Center. (U.S. Air Force Photo by Julian Hernandez)
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