High-Tech Horror

How a $600 million system figured in a ghastly accident

At first, it seemed like a triumph of high technology. Supersophisticated radar aboard the U.S.S. Vincennes picked up the airplane almost as soon as it took off from the Iranian airport of Bandar Abbas, on the shores of the Persian Gulf. Within moments the radar received enough information about altitude, speed and flight path for Captain Will Rogers III to reach a conclusion: the plane was a hostile fighter flying an attack pattern. An IFF (Identification, Friend or Foe) signal bounced back by the approaching aircraft seemed to confirm that conclusion. Two missiles launched by the Vincennes were electronically guided precisely...

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