US halts F-22 flights over oxygen system concerns

WASHINGTON - The US Air Force has stopped flying Lockheed Martin's F-22 Raptor fighter jets indefinitely due to concerns about faults in the system that supplies oxygen to pilots, the military said on Thursday.
The US Air Force said it issued an order on Tuesday to stop flying the jets "until further notice" after reports of "oxygen system malfunctions."
"The stand-down provides Air Force officials the opportunity to investigate the reports and ensure crews are able to safely accomplish their missions," the Air Force said in a statement.