U.S. Air Force Master Sgt. Paul Willson, 8th Civil Engineer Squadron Explosive Ordinance Disposal section chief, and Tech. Sgt. Danielle McAtee, 8th Medical Group Radiology technician, climb stairs during the 9/11 Remembrance Stair Climb at Kunsan Air Base, Republic of Korea, Sept. 11, 2017. During the event, Airmen climb the seven-story dormitory while holding the names of victims and first responders who perished during the terrorist attack. (U.S. Air Force photo by Staff Sgt. Victoria H. Taylor)