Pentagon limits F-22 flights
Flights of the F-22 advanced stealth fighter are now limited to regions where pilots can make quick landings if they experience oxygen problems. Defense Secretary Leon Panetta made the decision after pilots complained about oxygen-deficit problems which have resulted in dizziness,blackouts and other symptoms that arise when the body doesn't have enough oxygen. The Pentagon says the limits will not affect the war zone in Afghanistan because the geography allows sufficient landing areas. Panetta ordered the Air Force to expedite installation of backup oxygen systems but experts haven't pinpointed what's causing the issue.