Tech. Sgt. Brian O’Connor, 407th Expeditionary Logistics Readiness Squadron NCO in charge of fuels distribution, withdraws a sample from a fuel mix set up at the 407th Air Expeditionary Group, Jan. 2, 2017. The unit mixes additives with the jet fuel as it is delivered to the holding systems and samples are tested in a lab to ensure the correct ratio is present. ( Air Force photo/Master Sgt. Benjamin Wilson)(Released)

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Photo credit: © AB Forces News Collection / Alamy / Afripics
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Keywords: .., 407th, aeg, air, cjtf-oir, coalition, force, inherent, iraq, isil, isis, resolve, stability, usafcent, uscentcom