A Porta Count stands ready to assist with gas mask fit tests Thursday, Oct. 26 at the 55th Aerospace Medicine Squadron bioenvironmental flight in Farichild Hall on Offutt Air Force Base, Neb. The fit test takes about five minutes and could be the reason Airman survive attacks. ( Air Force photo by Tech. Sgt. Rachelle Blake)

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Keywords: 55th, aerospace, afb, bioenvironmental, gas, mask, medicine, offutt, squadron