He realizes something: The Americans must have done the impossible: broken all of their codes. That explains Midway, it explains the Bismarck Sea, Hollandia, everything. It especially explains why Yamamoto—who ought to be sipping green tea and practicing calligraphy in a misty garden—is, in point of fact, on fire and hurtling through the jungle at a hundred miles per hour in a chair, closely pursued by tons of flaming junk. He must get word out! The codes must all be changed! This is what he is thinking when he flies head-on into a hundred-foot-tall Octomelis sumatrana .