This is old news, and one pilot has died probably due to the OBOGS issue (but inconclusive, he crashed). It was due to that crash, and reports of hypoxia symptoms that this became an issue. So far, they have failed to replicate the problem, and they're pointing the cause to starting up the raptors inside hangars in Alaska.
Also, I disagree with buying only 187 F-22's. We need at a minimum, double that amount. We can't rely on aging F-15C airframes. We also can't rely on having F-15E's take over that A-to-A role, but in the future, it may look like that may happen once F-15C airframes just get too old to be operational anymore.
It's also going to cost a hell of a lot more to maintain older F-15C for much less capability.
With China aggressively ramping up military aggression in the S. China Sea against Philippines and Taiwan, we desperately need more fighters, and a larger show of force in the region. We also need to sell new F-16C/D fighters to Taiwan. Taiwan has requested for those fighters repeatedly, yet we won't sell it to them? I'm sick of us trying to bow down to the wishes of China.
Wishful thinking: I wish Korea, Taiwan, Japan, Philippines, Singapore, Malaysia, Australia, and among others will make a NATO-like alliance to provide a deterrence against a more and more aggressive China, but with the current business/political atmosphere, it's highly unlikely that will happen.
Besides, Korean/Taiwanese/Japanese all hate each other. So stupid that they do.. they're allies, but not allies.