Air Force Tech. Sgt. Brittany Lepchenske, 423rd Security Forces Squadron NCO in charge of training, inspects her gas mask to ensure a proper seal during a chemical, biological, radiological and nuclear (CBRN) defense survival skills training course at RAF Alconbury, England, March 8, 2022. Gas masks are inspected regularly as any damage reduces its effectiveness during a CBRN attack.

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Photo credit: © NB/IA / Alamy / Afripics
License: Licensed
Model Released: No

Keywords: 501, 501csw, cbrn, csw, readiness, usaf