U.S. Army Spc. Jessica Neidhardt, a water purification specialist with the 651st Quartermaster Company, explains the filtration process of the Reverse Osmosis Water Purification Unit, June 15 during the Combat Support Training Exercise on Fort McCoy, Wis. The unit is providing clean, drinkable water to the multinational force participating in the CSTX. (U.S. Army photo by Sgt. Beth Raney, 363rd Public Affairs Detachment)