Vehicles arrive with Reserve and National Guard troops at Fort McCoy, Wis., to attend an annual Combat Support Training Exercise Aug. 7, 2021. Several thousand troops traveled from throughout the United States to take part in the multi-week CSTX and sharpen their military skills. Events have included simulated combat in field environments, physical fitness training, marksmanship and live fire ranges. (U.S. Army photo by Sgt. 1st Class Gary A. Witte, 642nd Regional Support Group)