"And I hope you do," the vice-admiral said with a grave nod. "But there is something you must keep in mind every minute of the time until your special mission is accomplished. It's that that spy is but one of many. Bluntly, you two are marked men. I don't mean to alarm you unnecessarily, but you both bumped into something that is of vital importance to the Japanese command in the western Pacific. You _know_ that there is a dangerous Nazi spy, serving as a fighter pilot aboard one of our newest and most powerful carriers. We must accept the undoubted fact that the Jap at Dago, and that Nazi, now at sea, believe you two heard much of their conversation there in that shack. That the Nazi was not arrested when he went aboard his ship simply proved to them that you did not know his name. But remember this! The Jap in question obviously followed you to the Los Angeles base. Maybe he did put those time fire bombs in the mail sacks, hoping that you both would lose your lives en route to Hawaii. And maybe he didn't. But either way it doesn't make much difference. I mean, we have got to assume that the Jap knew you were heading for Hawaii, and why! In short, to identify this Nazi when his carrier arrives." "But why does that make us marked men, now that we are here, and not back on the mainland, sir?" Freddy Farmer asked with a frown. "I think I can answer that, Freddy," Dave Dawson spoke up with an apologetic glance at the senior naval officer. "Because of what Vice-Admiral Stone just told us. That our little Japrat is not the only Jap around. He may have spies of his own right here in the Hawaiians. And there's such a thing as short-wave radio, you know. To play it safe ... I mean, in case we did reach Hawaii, which we have, he might radio one of his pals to do what he wasn't able to do. And to do it before that Nazi carrier put in to Pearl. Isn't that what you had in mind, sir?" "That is it, exactly, Captain Dawson," the vice-admiral said, giving him a nod of approval. "You two, and you two alone, can block this thing. So until the force puts into port, which will be the day after tomorrow, you are marked men. At least we have got to assume that such is the case, until we know better. And that brings us up to the matter of the carrier force arriving, and you identifying this Nazi for us ... if you can." The senior officer paused and stared at them both a little hopefully. Dawson grinned and nodded. "We'll spot him, sir," he said with all the assurance in the world in his voice. "We didn't get much of a look at him, and nothing that we saw of him stood out in a noticeable sort of way. But I know very well, sir, that I'll recognize him when I see him again." "And so will I, sir," Freddy Farmer echoed with a confident nod. "It's just one of those things that a chap can't put into words. I mean, I couldn't for the life of me tell you _why_ I'll be able to recognize him, but I know that I will."