The 52nd Fighter Wing Honor Guard posts the flags of the United States, Germany and the Air Force during the 9/11 memorial ceremony at the air park on Spangdahlem Air Base, Germany, September 11, 2017. Ceremonies throughout the Air Force and around the world took place to commemorate the 16th anniversary of the attacks on 9/11. (U.S. Air Force photo by Senior Airman Dawn M. Weber)