Senior Airman Isaac Darko, a bioenvironmental engineering technician with the 5th Medical Group, checks the air for any chemicals or contamination at Minot Air Force Base, , Sept. 22, 2016. The chemical suits are capable of holding air for up to 60 minutes after the Airmen get into the suit, depending on their lung capacity and volume. ( Air Force photo/Airman 1st Class Jonathan McElderry)

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Keywords: 5mdos, bio, bioenvironmental, engineering, technicians