Lockheed YF-12A > National Museum of the United States Air Force

The YF-12 was developed in the 1960s as a high-altitude, Mach 3 interceptor to defend against supersonic bombers. Based on the A-12 reconnaissance aircraft, the YF-12A became the forerunner of the

Lockheed YF-12A > National Museum of the United States Air Force

National Museum of the U.S. Air Force, The North American X…

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Lockheed YF-12 High-Altitude, High-Speed Interceptor Aircraft

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File:YF-12A NMUSAF.jpg - Wikipedia