MCGREGOR RANGE, N.M. (May 20, 2010) Pfc. Quincy Thornton, a water purification specialists with A Company, 125th Brigade Support Battalion, 3rd Infantry Brigade Combat Team, 1st Armored Division, finishes hauling in the Dolphin Filter following the "Roughrider" company's training on the Tactical Water Purification System, May 20. The exercise was during their Bn.'s 10-day field training exercise, May 12-21. Use of the Dolphin Filter is the first filtration phase of the Tactical Water Purification System used by the Army.