Air Force Staff Sgt. Joseph Guzman, 455th Expeditionary Logistics Readiness Squadron Fuels Laboratory noncommissioned officer in charge, conducts a fuel sample analysis at Bagram Air Field, Afghanistan, May 16, 2015. Guzman ensures the fuel delivered to aircraft at Bagram meets the Air Force standard. Tech Sgt. Joseph Swafford

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Photo credit: © PJF Military Collection / Alamy / Afripics
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Keywords: air, airforce, airman, baf, force, military, ofs, resolute, states, support, united, usa