Bioenvironmental engineering keeps water safe for swimmers
Airman 1st Class Denis Marchelli, 1st Special Operations Medical Support Squadron bioenvironmental engineer technician, secures the cap of a sample of pool water at the Aquatic Center on Hurlburt Field, Fla., July 22, 2015. As one of their many proficiencies, bioenvironmental is responsible for ensuring water conditions are safe for all personnel at Hurlburt Field. (U.S. Air Force photo/Senior Airman Meagan Schutter)