TheCodeBreakers
through the air, Navy intercept Station S at Bainbridge Island heard and
nabbed them. The station teletyped them to GY, which identified them as
J19 and began cryptanalysis.
Many of the ships of the Pearl Harbor strike force had by then
gathered in bleak Tankan Bay, where the only signs of human presence
were a small concrete pier, a wireless shack, and three fishermen's huts.
Snow covered the surrounding hills. In the gray twilight of November 21,
the great carrier Zuikaku glided into the remote harbor to complete the
roster. The force swung at anchor, awaiting the order to sortie.
A few hours later, on November 20 (Washington time), the Japanese
ambassador to the United States, Admiral Kichisaburo Nomura, and his
newly arrived associate, Saburo Kurusu, presented Japan's ultimatum to
Hull. It would have required the United States to reverse its foreign
policy, acquiesce in further Japanese conquests, supply Japan with as
annaabi.ee 
