U.S. Air Force Tech. Sgt. Jennifer Flecker, an aerospace and operational physiologist technician from Dyess Air Force Base, Texas, secures oxygen masks to Airmen inside a high-altitude pressure chamber April 4 at Offutt Air Force Base, Neb. This simulated flight marked the end of the chamber’s 56 year history at Offutt.
U.S. Air Force Photo by Josh Plueger
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