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Naval Intelligence had reported an absence of radio signals to CINCPAC. This phenomenon called radio silence was not unique, had happened in numerous scenarios and was not an essential precursor to an aggresive move. Traffic analysis is just one element of the signals intelligence puzzle.

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โˆ™ 2007-09-04 00:50:25
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Q: Why did American intelligence fail to give warning of the devastating Japanese attack on Pearl Harbor?
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