Participants of the Kadena Fire Emergency Services 9/11 Memorial Stair Climb walk up and down a flight of stairs Sept. 11, 2018, at Kadena Air Base, Japan. The event was open to all personnel with base access to honor the sacrifice first responders made during the Sept. 11, 2001, terrorist attacks and remember the victims of that day. (U.S. Air Force photo by Staff Sgt. Micaiah Anthony)