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No similar incidents have been reported since, Sholtis told ABC News. Sholtis also revealed another twist in the F-22's case this week when he told the Air Force Times that over a period of four months after the grounding last year, ground crews reported at least five different incidents of experiencing their own "hypoxia-like symptoms" while running engine tests with the planes on the tarmac. READ: McCain Says $79B Jets Still Have No Missionį-22 Ground Crews Experience 'Hypoxia-Like Symptoms' Despite being the most advanced fighters on the planet, none of the planes have been used on a combat mission since they went combat-ready in late 2005. taxpayers an estimated $79 billion - meaning that including research, development and production among other costs, each plane has a price tag of more than $420 million. Last week the Air Force officially received the last F-22 Raptor from defense contracting giant Lockheed Martin, completing an order of 187 planes that cost U.S. Sholtis said that there are no hard numbers on how many F-22 pilots are experiencing the "Raptor cough," but said it's obviously "common enough to have developed its own moniker."
#F 22 RAPTOR NEWS FULL#
Over the weekend, one of two F-22 pilots who spoke out publicly to CBS News' "60 Minutes" about their fears of flying the F-22 linked the "Raptor cough" with other symptoms associated with the "hypoxia-like" incidents, saying that in a room full of F-22 pilots, "the vast majority will be coughing a lot of the time." taxpayers more than an estimated $420 million each, for nearly five months to investigate what was causing the incidents, but never could come up with an answer and sent the planes back in the air. Last year the Air Force grounded the full fleet of F-22s, which cost U.S. READ Exclusive: Family Demands Truth in Air Force F-22 Pilot's Death
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Hypoxia is caused by a lack of oxygen to the brain and is characterized by dizziness, disorientation, poor judgment and, eventually, unconsciousness. The leakage of toxins into the oxygen system is also a possible cause of F-22 pilots experiencing dangerous "hypoxia-like symptoms" while flying the Raptor in more than two dozen cases since 2008, as reported in a recent ABC News' "Nightline" investigation. Tadd Sholtis told ABC News that the service has not discounted the possibility that toxins that may have leaked in to the oxygen system could be exacerbating the coughing. And while the current thinking by the Air Force is that the F-22 pilots suffer more bouts of coughing than their counterparts is because the F-22 can fly at more extreme speeds and altitudes, Air Force spokesperson Lt.