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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. In addition to WFSM’s daily tests, the 22nd Aerospace Medicine Squadron Bioenvironmental Engineering flight performs more in-depth tests on a weekly basis. (U.S. Air Force photo/Airman 1st Class Erin McClellan)
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