CSTX 86-17-02 Marine Setup
U.S. Marine Forces Reserve Cpl. Carlos Elizarraras, 4th Medical Battalion, mounts a weapon bracket on a High Mobility Multipurpose Wheeled Vehicle (HMMWV) during Combat Support Training Exercise (CSTX) 86-17-02 at Fort McCoy, Wis., August 15, 2017. CSTX includes more than 12,000 service members from the Army, Navy, Air Force and Marine Corps as well as from six countries. CSTX is a large-scale training event where units experience tactical training scenarios specifically designed to replicate real-world missions. (U.S. Army Reserve photo by Spc. John Russell/Released)