The Opana Radar Site on the north corner of the island detected the Japanese aircraft approaching, and the radar operators there reported it to their command.

The Opana Radar Site on the north corner of the island detected the Japanese aircraft approaching, and the radar operators there reported it to their command. However this report was confused for a formation of B-17s that was scheduled to arrive from that general direction. The size of the detected formation, which might have revealed the confusion, was not properly communicated. This incident was a subplot in the 1970 film Tora! Tora! Tora!, which may be where you heard it.