The Lockheed SR-71 Blackbird high-altitude, high-speed reconnaissance aircraft is retired from SAC service in ceremonies at Beale AFB, Calif. SR-71 crews flew more than 65 million miles, half at speeds above Mach 3.
The cost of the nuclear AGM-181 Long-Range Stand Off missile has come down slightly and the program is on track, but several technologies it relies on are still considered immature, the Government Accountability Office found in a report. Meanwhile, the GAO also assessed the LGM-35A Sentinel intercontinental ballistic missile as…