TheCodeBreakers
his safe in GZ and checked to see if the 14th part had yet come in. It had
not. Finally he went home himself.
In S.I.S., meanwhile, the new teletype that would expedite the
forwarding of intercepts was being set up in the "cage," the barred room
where PURPLE traffic was processed. Monitor Post 2 was requested to send
in some intercepts as a test. In San Francisco, Harold W. Martin, the
noncom in charge, punched onto the teletype tape the intercepts that the
post had picked up since airmailing in the bulk of the day's material, as
well as the earlier ones. Among the later ones was Yoshikawa's final
message, which thus became one of the first to move on the direct wire
as a real, nontest item. S.I.S. received it a little after midnight. But PA-K2
was a low-priority system, and the message had originated in a consular
office. It was set aside to be worked on later.
Besides, S.I.S. had more important things to worry about. Like OP-20-