Should this be public information ?
U.S. Air Force fixes computer glitches in 87 F-22s
http://www.f-16.net/news_article2210.html
The six Raptors were participating in an inaugural 12-hour flight from Hawaii to Kadena Air Base in Okinawa, Japan on Feb. 10 when a "navigation anomaly" maimed several computer systems on the aircraft, an Air Force colonel said.
The computer glitch, which occurred as aircraft crossed the International Date Line, crippled navigation systems and hindered communications.
One pilot was able to contact contractor Lockheed Martin to troubleshoot the error during the flight, the Air Force said. Several pilots attempted to reboot the system with no success.
Luckily for the Raptors, there were no weather issues that day so visibility was not a problem which meant that with their refueling tankers as guide dogs, they were able to safely return to Hawaii.