来自MSN6 个月
The A-12 Oxcart: The CIA's Mach 3 Spy Plane That Used 'Plasma Stealth'
Summary and Key Points: The A-12 Oxcart, a high-altitude reconnaissance aircraft developed by Lockheed's Skunk Works for the CIA, preceded the renowned SR-71 Blackbird.Entering service in 1967 ...