That is very true.

That could be but if so the material would be detected in the pilot's airway. Much like in computer tech, when trying to diagnose, you keep changing variables until you find the one part or situation that makes a difference. I am stunned that they can't figure this out.

Some background. Monitoring blood O2 levels is easy. We have all had it done at the docs office. I am assuming that the pilots have already or could easily be continually monitored for blood O2 levels. Either they are adequate or not. Easy to discover. Next issue is whether there is enough blood to the brain. This issue is addressed by their G training and pressure suit. Either it works or it doesn't. I assume that the simulator can produce the same G levels that the F22 can. VOCs or "volatile organic compounds" are very easy to detech with a variety of inexpensive meters on the commercial market. Either they are VOCs in the air or not. Contaminants in the blood such as carbon monoxide are also easy to detect. DO pilots on bottled, tested O2 still have the issues? Virtually every possible cause is simple to test for yet they still can't figure it out. I say: What the hell?

I agree with Ted.
If Jews (2% of the population) would stop spending their time pushing their liberal progressive agenda on the rest of the country, then maybe they would have time to vote for stong Israel supporters. Intellectual, secular Jews have produced an army of gentile liberals who support the progresive agenda but have no Jewish allegence. Result: Israel has little support in the Democratic party. I support Israel but am pissed off at the constant assault on traditional values by Jewish progressives. I think it borders on anti Christian bigotry. Example: The trashing of the movie "The Passion". Way to make friends!