The U-2 espionage plane was famous for being shot down by the Soviet Union in an incident in 1960.
"…the Pentagon was ready to start retiring the plane, which took its first test flight in 1955. But Congress blocked that, saying the plane was still useful.
And so it is. Because of updates in the use of its powerful sensors, it has become the most sought-after spy craft in a very different war in Afghanistan."
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