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Maj. Zachary Garrett, 49th Medical Group Human Performance flight commander, adjusts the oxygen level during a hypoxia recognition simulation for Tech. Sgt. Jonathan Andrew, 49th MDG Education and Training flight chief, Jan. 11, 2019, on Holloman Air Force Base, N.M. As an aerospace physiologist, Garrett conducts hypoxia recognition and recovery training and studies human factors in the flight environment for 49th Wing aircrew. (U.S. Air Force photo by Staff Sgt. BreeAnn Sachs)
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