Sgt. Shannon Shields, from Franklin, Pa., a water treatment specialist with the 326th Quartermaster Company (Water Storage and Distribution), performs a turbidity test on the water cleaned for Soldiers use during Warrior Exercise 78-15-01 at Fort A.P. Hill, Va., Jan. 12, 2015. Approximately 4000 active duty, National Guard, Army Reserve and U.S. Navy personnel are participating in WAREX 78-15-01 at multiple locations in the eastern US. (Army Photo by Sgt. Christopher Bigelow / 316th ESC)