U.S. Service members run during the final lap during a 24-hour vigil, honoring the fallen members of the Tactical Air Control Party at Joint Base Langley-Eustis, Va., March 25 and 26, 2015. Two hundred and twenty-one Service members collectively ran or walked 1,351.2 miles during the vigil. (U.S. Air Force photo by Senior Airman Breonna Veal/Released)