TheCodeBreakers
carried Army intercepts from Hawaii to the mainland, departed only once
a week on the average, and weather sometimes caused cancellations,
forcing messages to be sent by ship. As late as the week before Pearl
Harbor, two Army intercepts from Rio did not reach Washington for
eleven days. Such delays compelled the Navy to install teletypewriter
service in 1941 between Washington and its intercept stations in the
continental U.S. The station would perforate a batch of intercepts onto a
teleptype tape, connect with Washington through a teletypewriter
exchange, and run the tape through mechanically at 60 words per
minute, cutting toll charges to one third the cost of manually sending
each message individually. Outlying stations of both the Army and Navy
picked out Japanese messages bearing certain indicators, enciphered the
Japanese cryptograms in an American system, and radioed them to
Washington. The reencipherment was to keep the Japanese from
annaabi.ee 
