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![](http://upload.wikimedia.org/wikipedia/commons/thumb/9/97/Lockheed_SR-71_Blackbird.jpg/500px-Lockheed_SR-71_Blackbird.jpg)
Credit: NASA
The Lockheed SR-71, commonly known as the "Blackbird," was an advanced, long-range, Mach 3 strategic reconnaissance aircraft that flew from 1964–98. The SR-71 was one of the first aircraft to be shaped to have an extremely low radar signature. The aircraft flew so fast and so high that if the pilot detected a surface-to-air missile launch, the standard evasive action was simply to accelerate. During its entire operational life, more than 3,000 missiles were fired at the aircraft, yet no SR-71 was ever shot down.