Bioenvironmental Airmen ensure safe work conditions

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U.S. Air Force Staff Sgt. Amber Metts, 19th Aerospace Medicine Squadron Bioenvironmental NCO in charge, checks the pH level in a water sample May 18, 2017, at Little Rock Air Force Base, Ark. The purpose of the test is to make sure there are no harmful contaminants in the water. (U.S. Air Force photo by Airman 1st Class Grace Nichols)

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