Aeronautics: A Swift Black Bird

President Johnson had hardly revealed the existence of Lockheed's supersonic A11 last February before the plane and its mission were grounded in controversy. Across the U.S., aviation experts argued that the A11 was built to fly so high (100,000 ft.) and so fast (up to 2,500 m.p.h.) that it could only have been conceived as a successor to the U2, the slow-speed (500 m.p.h.) reconnaissance plane that flew into so much trouble over Russia. But last week the A11 was publicly shown and flown. And the experts quickly reconsidered their judgment. From...

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