Tora! Tora! Tora!
At 07:53, Fuchida ordered Mizuki to send the code words ""Tora! Tora! Tora!" back to the carrier "Akagi", the flagship of 1st Air Fleet. The message meant that complete surprise had been achieved. Due to favorable atmospheric conditions, the transmission of the "Tora! Tora! Tora!"" code words from the moderately powered transmitter were heard over a ship's radio in Japan by Admiral Isoroku Yamamoto, the naval commander, and his staff, who were sitting up through the night awaiting word on the attack.