U.S. Army Spc. Thomas Hansen, 651st Quartermaster Company, Casper, Wyo., tests a water sample using a CP15 Chlorine Photometer during Combat Support Training Exercise (CSTX) 86-16-03 at Fort McCoy, Wis., August 7, 2016. The 84th Training Command’s third and final Combat Support Training Exercise of the year hosted by the 86th Training Division at Fort McCoy, Wis. is a multi-component and joint endeavor aligned with other reserve component exercises. (U.S. Army photo by Spc. John Russell/Released)