Luke Airmen participate in 9/11 Tower Challenge
Participants of the 9/11 Tower Challenge walk up and down the steps at Gila River Arena Sept. 11, 2021, in Glendale, Arizona. Photos and descriptions of the fallen were placed in various seats throughout the arena to honor their memory. Participants walked up and down stadium stairs representing the 110 flights of stairs climbed by New York City firefighters during the attacks on the World Trade Center and in honor of those who lost their lives. (U.S. Air Force photo by Senior Airman David Busby)

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Photo by: Senior Airman David Busby |  VIRIN: 210911-F-QK476-0136.JPG