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Staff Sgt. Nazareth Oliver, 87th Aerospace Medicine Squadron physiologist, helps Col. Frederick D. Thaden, Joint Base McGuire-Dix-Lakehurst and 87th Air Base Wing commander, don a flight helmet and mask before demonstrating a hypoxia training system during its unveiling at JB MDL, N.J., Sept. 21, 2015. The altitude chamber previously used has a vacuum that removes the pressure to mimic pressure in flight at 25,000 feet, where the new one-person simulator uses a mixture of nitrogen and air brought in by gas cylinders through the reduced oxygen breathing device.
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