Hugh Pickens writes writes: "The LA Times reports that some of the nation's top aviators are refusing to fly the radar-evading F-22 Raptor, a fighter jet with ongoing problems with the oxygen systems that have plagued the fleet for four years. "We are generally aware of a small number of pilots who have expressed reservations about flying the F-22, and each of those cases will be handled individually through established processes," says Maj. Brandon Lingle, an Air Force spokesman. Concern about the safety of the F-22 has grown in recent months as reports about problems with its oxygen systems have offered no clear explanations why there have been 11 incidents in which F-22 pilots reported hypoxia-like symptoms. "Obviously it's a very sensitive thing because we are trying to ensure that the community fully understands all that we're doing to try to get to a solution," says Gen. Mike Hostage, commander of Air Combat Command. Meanwhile Sen. John McCain says that the jets, which the Air Force call the future of American air dominance, are a waste of their $79 billion price tag and serve no role in today's combat environment. "There is no purpose, no mission in Afghanistan or Iraq, unless you believe that al Qaeda is going to have a fleet of aircraft," says McCain, a former combat pilot himself. "[The F-22] has not flown a single combat mission... I don't think the F-22 will ever be seen in the combat it was designed to counter, because that threat is no longer in existence.""