Avoiding health hazards
Senior Airman Samantha Parkhurst, 47th Medical Operations Squadron bioenvironmental engineering technician, tests the chemical balance of tap water at the medical clinic on Laughlin Air Force Base, Texas, June 28, 2016. Bioenvironmental engineering specialists focus on reducing health hazards in the workplace and the surrounding areas. (U.S. Air Force photo/Senior Airman Ariel D. Partlow)