NASA officials who conducted an independent analysis of the F-22 Raptor's life support systems this summer have concluded that the Air Force's proposed corrective actions to a series of hypoxia-like incidents are positive and worthwhile improvements to the aircraft, but have warned the service against continuing to accept a "normalization of deviance" in the F-22's performance. NASA's Engineering Safety Center (NESC) performed an independent assessment of the F-22 beginning in late April, and that group's final report was submitted to...