Bioenvironmental Engineers Ensure Safe Living Conditions
Airman 1st Class Dong Yun Han, 374th Aerospace Medicine Squadron bioenvironmental engineer technician, uses a global positioning system to annotate the location of the samples he collects, Feb. 9, 2018, at Yokota Air Base, Japan. Bioenvironmental engineers identify and evaluate potential health hazards and develop plans and programs to prevent injuries and illnesses. (U.S. Air Force photo by Staff Sgt. Chelsea Sweatt)

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Photo by: Staff Sgt. Chelsea Sweatt |  VIRIN: 180209-F-ZL003-006.JPG