Senior Master Sgt. Danny Walker, 28th Logistics Readiness Squadron superintendent and president of the Green Knights Dakota Thunder Motorcycle Club, leads motorcyclists during the 2013 Dakota Thunder Run at Ellsworth Air Force Base, S.D., Aug. 6, 2013. The run was hosted by Ellsworth’s own GKDTMC and drew a crowd of more than 200 active-duty servicemembers, veterans, Ellsworth civilian employees and their families. (U.S. Air Force photo by Airman 1st Class Zachary Hada/Released)