Spc. Darrell Allen, a motor transportation operator with 15th Transportation Company, 100th Brigade Support Battalion, 75th Fires Brigade, attached to 189th Combat Sustainment Support Battalion, and a Norfolk, Va., native, sets up his movement tracking system on a palletized loading system before a convoy during a Joint Operational Access Exercise Aug. 23 at the Joint Readiness Training Center on Fort Polk, La. (U.S. Army photo by Sgt. Amanda Tucker, 82nd Sustainment Brigade Public Affairs/Released)