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https://creativecommons.org/publicdomain/zero/1.0/https://www.rawpixel.com/image/8742293
Staff Sgt. James Gardner and Mr. Ki-Hyon Pak push liquid oxygen into a beaker to perform an odor test here, April 9, 2012.
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Staff Sgt. James Gardner and Mr. Ki-Hyon Pak push liquid oxygen into a beaker to perform an odor test here, April 9, 2012.

An odor test is one way to check if the liquid oxygen is still in good quality. Gardner is a 51st Logistics Readiness Squadron fuels cryogenic technician and Pak is a cryogenics operator. (U.S. Air Force photo/Staff Sgt. Craig Cisek). Original public domain image from Flickr

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Staff Sgt. James Gardner and Mr. Ki-Hyon Pak push liquid oxygen into a beaker to perform an odor test here, April 9, 2012.

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