Bio environmental engineers test liquid to confirm chemical makeup
MSgt. Lloyd Miller (left) and Capt. Mark Sitterly of the bioenvironmental engineering team in the 127th Medical Group read data from the HAZID, a specialized piece of equipment that analyzes chemical samples to determine their compositions. For this chemical emergency exercise, Miller and Sitterly determined through this machine that the liquid found in the simulated contaminated area was hydrogen sulfide. (USAF Photo by John S. Swanson)