Staff Sgt. Shane Pentheny, 22nd Civil Engineer Squadron Water and Fuels System Maintenance technician, performs water-quality tests on water taken from several base buildings March 9, 2017, at McConnell Air Force Base, Kan. WFSM tests chlorine, fluoride and pH levels daily to ensure the base populace receives quality water. (U.S. Air Force photo/Airman 1st Class Erin McClellan)
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