"F-35 flight operations at Luke Air Force Base, Arizona, will continue to be suspended as analysts investigate five incidents where pilots suffered hypoxia-like symptoms, a spokeswoman for the base said Monday....
...Maj. Rebecca Heyse, spokeswoman for the 56th Fighter Wing, said a JPO team of engineers, maintainers and aeromedical specialists arrived on base Sunday and are currently narrowing down potential causes for the incidents. The hope is to identify the root cause over the next couple days, but no date has been set as this time for a tentative resumption of operations, she told Defense News....
...At this point, little is known about the incidents themselves, including whether the On-Board Oxygen Generating System failed in any of the cases. All five events occurred with different jets from multiple squadrons and production batches, Heyse confirmed. However, because only pilots from Luke AFB have developed hypoxia-like symptoms, the service continues to believe it remains a localized problem.
Brig. Gen. Brook Leonard, commander of the 56th Fighter Wing, will make the final call on when to resume flight operations."
Luke Air Force Base extends cancellation of F-35 flight operations