Air Force Chief Master Sgt. Cory Olson, left, renders a salute during a 9/11 remembrance ceremony at Bagram Airfield, Afghanistan, Sept. 11, 2017. Olson is assigned to the 455th Air Expeditionary Wing. During the ceremony, airmen paid their respects to the men and women who lost their lives on 9/11 and to the service members who made the ultimate sacrifice in the fight against terrorism. Air Force photo by Staff Sgt. Benjamin Gonsier