Osan honors 9/11 first responders
A U.S. Air Force firefighter assigned to the 51st Civil Engineer Squadron takes part in a 9/11 memorial stair climb at Osan Air Base, Republic of Korea, Sept. 11, 2018. Participants climbed 112 flights in order to honor the 343 firefighters who died rescuing others during 9/11, and to understand what they went through that day. (U.S. Air Force photo by Senior Airman Kelsey Tucker)

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Photo by: Senior Airman Kelsey Tucker |  VIRIN: 180911-F-DV125-1347.JPG