Base fire trucks line the street in front of the installation flag pole during a 9/11 Memorial Ceremony, at Ellsworth Air Force Base, S.D., Sept 11, 2015. The ceremony began with the raising of the flag and concluded with the lowering of the flag to half-staff honoring the victims of the terrorist attacks on Sept. 11, 2001. (U.S. Air Force photo by Airman 1st Class James L. Miller/Released)