U.S. Air Force Master Sgt. Ryan Voigt, a bioenvironmental engineering technician with the 176th Medical Group, Alaska Air National Guard, adds a reagent into a water sample in Hayneville, Ala., May 8, 2011. The reagent will cause a color reaction to the amount of chlorine in the water. Voigt was in Alabama to help test the wastewater for permit compliance and related treatment adjustments, and with drinking water for chlorine amount.