Despite $65 Billion Investment, World’s Most Costly Jet Still Grounded - ProPublica

Of course, this means more time and more money from the U.S. taxpayer. The F-22 was killed a pilot - NOT by an accident - but a suspected oxygen system problem. The pilot needs to have good oxygen with nothing added - carbon monoxide, et cetera.

See more at
http://www.propublica.org/blog/item/despite-65-billion-investment-worlds-most-costly-jet-still-grounded