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Maj. Joseph Teodoro, 374th Operation Support Squadron airspace physiologist, holds the controls of a flight simulator while demonstrating a Restricted Oxygen Breathing Device at Yokota Air Base, Japan, Nov. 22, 2022. Pilots and aircrew members train to notice the signs of hypoxia, so they can react appropriately before symptoms set in, such as lightheadedness or the inability to concentrate. (U.S. Air Force photo by Staff Sgt. Ryan Lackey)
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