Airman 1st Class Justin Stoney, an Individual Protective Equipment technician assigned to the 28th Logistics Readiness Squadron, tests the seal of a gas mask at Ellsworth Air Force Base , Dec. 6, 2016. Stoney is responsible for maintaining gas masks, which includes sanitizing them when they are turned in, testing them before they are issued and inspecting them periodically to ensure their readiness.

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Photo credit: © Conner Flecks / Alamy / Afripics
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Keywords: archive, armed, defence, forces, lrs, mflight, military, reportage, servicemen, usa