"An important use," the Jap replied. "Right now there are three American carriers in the San Diego Basin. You know that yours will sail tonight. Perhaps the other two, with their forces, will sail also. It may be, though, that only your carrier will stop at Pearl Harbor. Later it may meet the other two carriers at sea. You do not know now, and neither do I. However, you can keep our Pacific patrol forces informed of your own position. The water flares. I will explain their use briefly, and the one in Honolulu will give you detailed instructions. It will be an easy matter for you to learn the position of your carrier, and its force. An equally easy matter for you to learn the strength of your force, and whether others have joined it. So! Each evening you will put all that information down on special paper that you will be given in Honolulu, and put it in a watertight pocket attached to the flare. Then, unseen, you will throw the flare into the water. It is so constructed that it will not break into light for three or four hours. That is so that your carrier will be far out of sight range by then. However, come darkness, all of our submarines will surface to re-charge their batteries. Perhaps one of them will see the flare. Or perhaps one of our long-range patrolling Kawanishi flying boats will sight the flare, and land beside it. Perhaps not the first night you are at sea, or the next, or the next. But one night a flare will be picked up, and we will know all we need to know to set our trap of destruction for a future date." "That sounds very interesting!" the Nazi said eagerly. "I shall enjoy doing that kind of work. Let us hope that a dozen of their swine carriers make up the force of which mine will be a part!" "Let us hope so," the Jap replied, with a little laugh that chilled the blood in Dawson's veins, "but let us not count on it. The American dogs are not fools, all the time. We have shown them what happens to fools. But if it be only your carrier, that will be enough. From the information you throw into the water each night we will be able to guess accurately the destination of the force. Then at the right moment Admiral Shimoda's forces will destroy it completely. The victory will be just what is needed in Japan, and in Germany, too. And the Americans will cease to be so foolishly bold. They will hesitate, and that will give Admiral Shimoda the necessary time he desires to re-enforce his ground forces and break the American grip on New Guinea and the Solomons." "But if we could get several of their carriers!" the Nazi said fiercely. "We ..." "We will hope for that," the Jap stopped him, "but we will be content with one carrier force. It will be enough for the present. Now, before you go I want you to look at this map of Honolulu. I will show you the quickest way to reach the address I have given you. Your carrier may not remain in Pearl Harbor long, so you must not waste time making this important contact."