U.S. Air Force guidance that told anyone connected to F-22 Raptor operations to report any hypoxia-like symptoms likely led to a number of those reports from ground workers for the aircraft, says Maj. Gen. Charlie Lyon, Air Combat Command’s director of operations. The Air Force says a rash of recent breathing issues with F-22 pilots, who reported hypoxia-like symptoms, was due in a large part to a valve-and-vest system designed for other aircraft being used by Raptor fliers. But, Lyon ...


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