Runners participate in the 9/11 Never Forget Memorial 5K at Langley Air Force Base, Va., Sept. 11, 2015. U.S. Air Force Airmen assigned to the Distributed Ground Station-1 hosted the event, giving members of Joint Base Langley-Eustis the opportunity to honor the historic day’s events. (U.S. Air Force photo by Airmen 1st Class Derek Seifert/ Released)