The North American XB-70 Valkyrie is rolled out at Palmdale, Calif. Designed to fly at three times the speed of sound and at altitudes above 70,000 feet, the XB-70 is originally planned as a manned bomber, but funding limitations allow for only two aircraft, to be used strictly for testing and research.
Northrop Grumman recently delivered the first production-version of a new upgraded, jam-resistant airborne navigation system for the Air Force's F-22 Raptor and Navy’s E-2D Advanced Hawkeye aircraft.