Army Reserve Private Zachary S. Alls, of the 639th Transportation Company, 497th Combat Sustainment Support Battalion, from Bedford, Va., performs maintenance on an M978-A4 Heavy Expanded Mobility Tactical Truck (HEMTT) during Warrior Exercise (WAREX) 86-16-03 at Fort McCoy, Wis., July 21, 2016. WAREX is designed to keep Soldiers all across the United States ready to deploy. (U.S. Army photo by Spc. Joseph Driver/Released)