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Pentagon Sees Valve Fix to Solve F-22’s Oxygen Problem

The Air Force is correcting oxygen troubles on Lockheed Martin Corp.’s F-22 fighter by replacing a valve in pressure vests worn by pilots at high altitudes.

The announcement yesterday by Pentagon spokesman George Little was aimed at resolving a yearlong mystery over why at least a dozen pilots flying the F-22 Raptor became dizzy and disoriented, a condition called hypoxia.