Seymour Johnson Air Force Base

Senior Airman Derek Johnson, 4th Aeromedical Dental Squadron, administers a gas mask fit test to Senior Airman Rebecca Laurence, 4th Logistics Readiness Squadron, Oct. 9, 2008, at Seymour Johnson Air Force, N.C. During a fit test Airmen will go through an array of different head positions to ensure there are no leaks when the masks are needed. (U.S. Air Force photo by Airman 1st Class Gino Reyes)

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Airman 1st Class Antonio Rice, 4th Aeromedical Dental Squadron, checks the seal of a gas mask during a fit test administered to Senior Airman James Steffes, 4th Aircraft Maintenance Squadron, Oct. 9, 2008, on Seymour Johnson Air Force Base, N.C. A gas mask fit test must be renewed every 40 months unless Airmen are deploy or gain or lose 10 percent of their body weight. (U.S. Air Force photo by Airman 1st Class Gino Reyes)

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Senior Airman Derek Johnson, 4th Aeromedical Dental Squadron, observes Senior Airman Rebecca Laurence, 4th Logistics Readiness Squadron, as she dons her mask during a gas mask fit test Oct. 9, 2008, on Seymour Johnson Air Force Base, NC. During a fit test, a candle is lit to send particles in the air, which help bioenvironmental technicians detect if the mask has a loose seal. (U.S. Air Force photo by Airman 1st Class Gino Reyes)

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Gas masks: fit to fight

Published Oct. 21, 2008