SMN report
The last of 195 F-22A Raptors for the US Air Force is now under construction, yet the entire F-22 fleet remains grounded over concerns about the pilot's cockpit breathing system inside the cockpit, which has been under investigation since November 2010, when an F-22 crashed mysteriously in Alaska. No emergency call was received from the pilot, and the assumption is that he passed out from oxygen loss before the crash.