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WASHINGTON - US Defence Secretary Leon Panetta has ordered the Air Force to restrict flights of its most advanced fighter jet, the F-22, after some pilots complained of dizzy spells and blackouts, officials said. Since 2008, officials say at least a dozen F-22 pilots have reported suffering a lack of oxygen but engineers have yet to figure out how to fix the problem. Under Panetta's decision, the F-22 Raptor will no longer be conducting longer-range flights and would instead stay within reach of runways to ensure a pilot could land in an emergency, Pentagon spokesman George Little told reporters.
