Sometimes, a briefcase arrives along with the gold shipment. The briefcase is always handcuffed to the wrist of a soldier who has grenades dangling all over his body so that he can blow himself and it to powder if the convoy should be assaulted by Huks. The briefcases go straight to the Bundok radio station and their contents are placed in a safe. Goto Dengo knows that they must contain codes—not the usual books, but some kind of special codes that are changed every day—because every morning, after the sun has come up, the radio officer performs a ceremony of burning a single sheet of paper in front of the transmitter shack, and then rubbing the withered leaf of ash between his hands.