"Never mind what you must have been!" Colonel Welsh said sharply.

"Finish what you were going to say! You had the hunch that he was--"

Dawson hesitated a second and then took the plunge. "That he was a

German, sir!"

A moment of tingling silence settled over the made-over bomb

compartment. Then Colonel Welsh broke it with an order to Major Parker.

"Come with me and show me this dead man, Parker," he said. "Dawson, you

and Farmer wait right here for me."

Three seconds later the colonel and the major had climbed out of the

bomber, leaving Dawson and Farmer to twiddle their fingers.

"I am going stark, raving mad!" young Farmer suddenly exploded in a low,

vibrant voice. "If I don't find out something soon, I don't know what

I'll do!"

"I'll join you in a throat-cutting act, pal!" Dawson said, and sighed

heavily. "If this isn't the most mixed-up business we ever got into,

then I don't know what! The colonel's been here half an hour, and we

don't even know why he came down here in the first place. We can thank

the gods for one thing, anyway."

"What's that?"

"That Colonel Welsh was relieved and not burnt up when I told him we had

destroyed those envelopes," Dawson replied. "Envelopes! Phew! I'll be

seeing those darn things in my dreams for the rest of my life. Gosh! One

would think they contained the complete plans of Allied High Command for

the invasion of the European Continent, or something!"

"Maybe they did," Freddy Farmer said with a shrug and a sigh. "Maybe

they did."

With that the pair lapsed into brooding silence. Each was perfectly

content to remain silent, because words were just a waste of breath now.

They had talked themselves black and blue in the face as to the what and

the why of this crazy business. For all their talking, they were right

back where they had started in regard to anything concrete and definite.

Why talk about it any more? It was far, far better to go quietly nuts

waiting for Colonel Welsh to return and throw a little light on the

subject.

They sat and waited for a good fifteen minutes, mulling over their own

thoughts and listening absently to the even murmur of the idling

Wright-Cyclone engines that powered the North American B-25.

At the end of that fifteen minutes, however, the colonel returned. To

Dawson's relief and pleasure, he saw that a lot of the worry had left

the Intelligence officer's face. In fact, there was an almost happy look

in his eyes. He came straight into the bomb compartment, seated himself

at his little table, and took the inter-com phone mike off the wall hook

at his side.

"Take off, Captain," he spoke into it. "Fly north for twenty minutes and

then take up the course I gave you. Eh? Right!"

The colonel put the inter-com mike back on the hook, looked at Dawson,

and smiled faintly.

"Thank heaven for your hunch," he said. "You were absolutely right. He

was a German."

"A spy, sir?" Dave blurted out before he could check himself.

"Naturally," the colonel replied. "Just about the best in the Nazis'

gang. Colonel Baron Franz von Steuben is his name. Or was. Frankly,

we've been after him for a long time. The world is well rid of his kind.

What's the matter, Dawson?"

"Major Parker, sir," Dawson replied, and reddened slightly. "I hope he

didn't think that I--"

"Not a bit of it!" the colonel interrupted quickly. "The major admires

you for your hunch. He'd be the last one in the world who would want you

to keep it to yourself. As a matter of fact, he suspected that you might

feel embarrassed and asked me to give you his compliments and to say he

was sorry he couldn't go along with you."

"To where, sir?" Freddy Farmer fairly shouted. And then he blushed so

flamingly that both Dawson and the colonel had to laugh.

"That's all right, Farmer," the Intelligence officer said, still

chuckling. "Don't blame you at all. I can see it in both your faces that

you're practically ready to blow up with questions. Well, things have

happened that I didn't want to happen, so I guess it's time for me to do

a little explaining. Do you remember that technical sergeant in the

hangar at Bolling Field?"

The two air aces nodded.

"He's dead," Colonel Welsh stated grimly. "He, too, was a Nazi spy. And

working right under my very nose, which doesn't make _me_ feel very

proud. Shortly after your take-off, one of the mechanics who helped to

roll out your plane came to me with the information that the technical

sergeant had been standing right outside that office while I was giving

you your instructions. I can tell you that that was the closest I ever

came to having a case of heart failure. I got to work at once checking

up on that technical sergeant. I won't bother you with the details, but

we caught him cold. Complete with a powerful short-wave sending set, and

all the rest of it. That was _after_ he had had time to do his dirty

work, _if any_. I know, now, what that dirty work was, of course. Your

experiences, and Major Parker's, made the picture clear. He simply

flashed word to other agents to get you two by hook or by crook. He knew

your course, and he knew what you carried, though I'm still positive

that he didn't know the contents of those sealed envelopes.

"Anyway, word was flashed along the network of Nazi spies on this side

of the Atlantic and to that U-boat lurking in the Caribbean. Heavens!

That was a daring stunt those devils tried."

"I'm still shaking at how close it came to being successful!" Dawson

spoke up in a strained voice as the colonel paused.

"Amen, and let's not think of that any more," the Intelligence officer

added almost fervently. "As soon as I learned the truth, I flashed you

a message to halt the flight and wait for me. I was too late at Puerto

Rico. I also took off in this plane at once to get down here and contact

you. I stopped at Puerto Rico, and Miami, too, and collected the two

sealed envelopes you had already delivered. Then I came on here and

found out that you two had used your heads. Just in time, too, thank

goodness. That you beat Colonel Baron Franz von Steuben to the punch is

something you can congratulate yourselves on for the rest of your lives.

If I had even dreamed that devil was down here, I would have had

nineteen different kinds of cat fits. But all's well that ends well.

And, although we've got to change our plans, we're still a couple of

jumps up on the Nazis."

Colonel Welsh paused for breath and to take out his handkerchief and

wipe imaginary beads of sweat from his forehead. Both Dawson and Farmer

sat on the edges of their seats waiting for him to continue, but after a

moment or two of silence Dawson couldn't stand it any longer.

"Can't you tell us a little about all this, Colonel? Just a little that

might help us--well, in case we got into another jam? Or are we on our

way back to Washington now? Is the job finished as far as Freddy and I

are concerned?"

"No, we are not heading back to Washington," Colonel Welsh answered

quietly. "As for you and Farmer, the job is just beginning. Well, you've

earned the right to know. Since I was going to explain at Natal anyway,

I might as well explain now. You recall all that F.B.I. business in New

York? Remember my telling you of that list of names turned over to the

F.B.I. for checking?"

"Could we forget, sir?" Dawson chuckled. "Freddy and I have been going

nuts trying to add two and two. We got a zero every time, and I don't

mean a Jap Zero, either."

"Well, all that was simply a check and double-check, you might say,"

Colonel Welsh said as his face became grave. "Every name on that

approved list was to be connected in some way with--"

The colonel paused and ran his tongue across his lower lip.

"Every man on that list," he began again, "is to have something to do

with a proposed trip by President Roosevelt to a war conference with

Prime Minister Winston Churchill at Casablanca in Morocco, North

Africa!"

A moment of silence hung over the trio as the colonel finished speaking.

Then Dawson gave a little laugh and looked at Freddy Farmer. "Pick up

the marbles, Master Mind!" he said. "Pick them all up. You win!"

CHAPTER ELEVEN

_Midnight Raider_

"What?" Colonel Welsh exploded as he looked from Dawson to Farmer, and

back again. "What's this?"

"Farmer, sir," Dave explained. "We made about six million guesses apiece

as to what this was all about. One of his was that the President was

going to North Africa, or beyond, for a conference with Prime Minister

Churchill and Stalin."

"Nobody heard you make that guess, did they?" the colonel asked,

tight-lipped, as he fixed his eyes on young Farmer.

"No, sir!" the English youth replied. "Nobody."

"He's right, sir," Dawson spoke up quickly. "I remember when he made

that guess he spoke so low I could hardly hear him, and I was lying

right next to him. In case you're wondering, Colonel, it wasn't until we

were on our way back to the base that Colonel Baron von Steuben slugged

us. So it's certain he didn't hear Freddy."

"Yes, of course you're right," the colonel said, and smiled at Farmer.

"So don't feel bad. It just gave me a start that you had hit the nail on

the head. You were partly wrong, though. Joseph Stalin will not be among

those present this time."

"And those envelopes, sir?" Dawson asked when the colonel fell silent

and stared out the compartment window at the darkness of night sweeping

by. "They are still very hush-hush stuff, as far as we're concerned?

Could I ask if they contained information about the President's trip?"

The senior officer turned from the window and looked straight at him.

"You can, and I'll tell you," he said. "Each envelope contained the

route the President's plane is to fly, the exact time schedule, and the

codes to be used in case the aircraft runs into trouble, or danger, and

all that sort of thing. In short, as I told you in Washington, the Nazis

would give almost anything to get hold of one of those sealed envelopes.

With that information in their possession, they could have delivered a

terrible blow to the United Nations. Think of it! The death of the

President and members of the American High Command! It would be like

setting our war effort back to the day of Pearl Harbor!"

The horrible thought made Dawson shiver in spite of himself, and he

thanked God that Freddy and he had destroyed their letters before von

Steuben had smashed them both to the ground. The President's death would

have been loss enough, but to have added the loss of the great leaders

of our military, naval, and air forces would have been world shaking

indeed.

"And now, sir?" Dawson asked after several moments of silence. "Now

another plan is to be carried out?"

Colonel Welsh didn't answer for a moment. He stared down at his two

hands folded on the edge of the little table, and the expression on his

thin face seemed to show a reluctance to answer that question.

Presently, though, he lifted his head and looked straight at the two

youthful air aces.

"We are now headed for Casablanca," he began quietly. "With the extra

tanks of fuel we have aboard, we can make it easily. If we reach

Casablanca without any trouble, I will be as sure as a man can be that

the enemy has not learned anything of the President's plan to fly there

himself. If we don't--"

The Chief of all U. S. Intelligence let the rest trail off into thin air

and made a little gesture with one hand. Dawson frowned and looked at

him earnestly.

"I don't think I get what you mean, sir," he said slowly.

"And neither do I, sir," Freddy Farmer spoke up.

For a moment the colonel held his lips pressed together in a thin, grim

line, and a hard light glittered in his eyes.

"In a thing like this," he said presently, "you can't afford to take

_any_ chances. You've got to be dead sure; as dead sure of everything as

it is humanly possible to be, from start to finish. I had utmost

confidence in your making the complete flight to Natal. And the way you

two did handle yourselves, when the odds were actually all against you,

proves that the confidence I had in you was justified. But in everything

there is ever present the little item of fate. A tiny little something

that is beyond man's power to see in advance, or even to counteract when

it happens. For example, that technical sergeant at Bolling Field. I

would have staked my life on that man. But, as things turned out, I was

completely mistaken. And so with you two, or with each of my agents at

the stops you were to make. Because of something you couldn't guard

against, or prevent before death came to you, the contents of one of

those sealed envelopes might have fallen into enemy hands. What I mean

is, one of the envelopes might have been opened, the contents read, and

then the envelopes resealed."

"But, Colonel," Dawson protested, "one of us would--"

"I know, I know," the colonel said, stopping him with a gesture of his

hand. "But look at it this way. Suppose von Steuben had knocked you both

out while you still had the envelopes? Suppose he had opened one, read

its contents, and resealed it so that you'd never have guessed? What

then? When you came to and found you still had the envelopes, you'd

never dream that they had been touched."

"But I'd be plenty suspicious, sir!" Dawson interrupted. "I'd--"

"Would you?" the colonel's quiet but firm voice stopped him again. "But

von Steuben was no fool! What if he stole your money and Farmer's money,

too? What then?"

"I see what you mean, sir," Dawson said, and grinned sheepishly. "We

would have thought we'd been victims of some holdup."

"Exactly," the colonel agreed. "A crazy little twist of fate over which

you had no control whatever. Yet the damage would have been done. So I

had to do what I could to find out if there had been any crazy twist of

fate. In other words, each of those sealed envelopes contained the

information, in code of course, that the _next_ bombing plane to pass

through would carry the President, and members of his party."

Dawson blinked, and suddenly the truth hit him between the eyes.

"What, sir?" he gasped. "You--you mean this B-25 is _supposed_ to be

carrying the President?"

"I mean just that!" the colonel confirmed grimly. "_If_ enemy agents

have learned what was in those envelopes, they will believe that this

bomber is carrying the President as a passenger. The President has

already left Washington in secret, and it wouldn't take much checking

by enemy agents to find out that he isn't at the White House. Naturally

they'd believe he was aboard this plane."

"Anything funny happen on your flight down, sir?" Freddy Farmer asked,

as the senior officer paused for breath.

"Nothing that I noticed," Colonel Welsh replied with a shake of his

head. "But just because things don't happen doesn't mean that they

_won't_, in time. So, as I said, we won't know for sure until we arrive

at Casablanca."

"And maybe not even then," Dawson mumbled to himself.

Colonel Welsh gave the Yank air ace a sharp look, and then nodded his

head.

"That's right," he agreed. "And maybe not even then. Just another reason

why an Intelligence man gets gray hair so early in life. You never can

tell about a job until it's all finished and you're working on another.

Then it's the same thing all over again."

The trio lapsed into silence, but not for long, because the question

that had been plaguing Dawson just had to come out.

"Supposing we make it to Casablanca okay," he said, "and you feel sure

that the enemy hasn't learned a thing about the President's trip, what

then? The sealed orders Farmer and I were to have delivered at the rest

of the stops are destroyed, and you say you collected the envelopes we

left at Miami and Puerto Rico. How will they know about the President's

plane when it does come through?"

"A good question, but I've got the answer, Dawson." The colonel smiled

and pointed to a brief-case on his little table. "In there are

duplicates of the orders, _without_ the part about the next bomber

through being the President's plane. If we reach Casablanca safely,

we'll turn around and head south for Liberia, cross the South Atlantic

to Natal, and deliver one of those sealed envelopes to each of the stops

as we fly north to Washington. I've allowed sufficient time for us to do

that, in case that's the way it works out."

"Well," Dawson remarked, and shifted to a more comfortable position on

his chair, "there's nothing like a two-way hop across--"

But he never finished his sentence, because at that moment the pilot of

the B-25 came back into the made-over bomb compartment and spoke to

Colonel Welsh.

"A surface ship just ahead, sir, sending up distress flares," he

reported. "Probably a merchantman with a torpedo in her plates. We're

about three hundred and fifty out, due east of Barbados. Do you want me

to radio the ship's position? You gave orders, you know, to maintain

radio silence."

"Sending up distress flares?" Colonel Welsh queried with a frown. "What

good does she think flares will do? The captain of any other ship near

by would be a fool to come close to her. The U-boat might still be

lurking around."

"I know, sir," the pilot said. "Maybe she hears us and wants us to send

out her position because her radio shack is gone. Maybe she thinks we're

a flying boat on patrol."

For some unknown reason a sudden eerie chill rippled across the back of

Dawson's neck. He looked at Colonel Welsh and tried to convince himself

that this was none of his business, but that eerie chill forced him to

blurt out, "And it could be something _else_, sir! I mean, if we send

out the ship's position, our radio will reveal _our own_ position."

The pilot of the bomber glared quickly at Dawson, and the corners of his

mouth stiffened. "It isn't fun to be torpedoed at night," he said

quietly. "I lost a brother that way."

Dawson flushed slightly, but he didn't drop his eyes before the other's

stare. Before he could say anything, though, Colonel Welsh addressed the

pilot.

"Circle her and continue to maintain radio silence, Captain," he said.

"Just before you pass her to port, drop a flare so that we can get a

good look at her. If she seems in trouble, then maybe we'll do something

for her. Meantime, though, I want all members of the crew to go to

battle stations."

The bomber pilot's eyes widened in surprise, but he had sense enough not

to ask any questions. He nodded, glanced at Dawson, turned and went

forward to his compartment. Dawson waited until he was out of earshot,

and then gave Colonel Welsh an apologetic smile.

"I'm sorry, speaking out of turn like that, sir," he said. "I guess the

captain must think I'm a little cracked."

"Let him think so," the colonel remarked quietly. "All he knows is that

he's flying me to Casablanca for a meeting with my agents, and that it's

up to him and his crew to get me there. If he'd been through what you

have, he'd be the first to agree with you. Maybe the flare will tell us

something. If it is a torpedoed ship, I think I will take a chance and

have her position radioed. Poor dev--"

That was as far as the colonel got. The savage yammer of aerial

machine-gun fire interrupted him. An instant later they all heard a yell

of pain from the pilot's compartment. Even before the echo had died

away, the North American B-25 heeled over on one wing and started to

slide off and down with both engines wide open.

"The pilot's hit!" Dawson yelled, and lurched to his feet. "Pilot hit

and his co-pilot, too, I guess. By what? How the heck--"

Dawson didn't finish, either. At that instant the night outside was

lighted with a brilliance like that of high noon. A terrific roar seemed

to slam into the B-25 from all sides and spin her around until she was

as helpless as a dried leaf in a gale.

CHAPTER TWELVE

_Fighting Hearts_

The crazy motion of the bomber knocked Dawson off balance and sent him

lurching heavily against the flare rack as he reached the navigator's

nook just aft of the pilot's compartment. The air whistled out of his

lungs, and balls of colored fire danced before his eyes. Fortunately,

though, his outflung hands caught hold of something, and he was able to

prevent himself from pitching headlong on his face.

The B-25 was still flooded by brilliant light, and above the screaming

roar of the over-revving Wright-Cyclones, Dawson could hear the chatter

of aerial machine guns. He gave no thought to the thing that was

happening. He had but one idea in his head, and that was to fight his

way forward to the pilot's compartment. As he dived past the navigator's

nook, a hand grabbed him by the arm, and he heard voices, but he could

not understand the words above the din of other noises. With a savage

wrench of his arm he freed himself, and piled forward into the pilot's

compartment.

One glance gave him a complete picture, and his racing heart seemed to

stand still. The glass of the pilot's compartment was shattered to bits.

The pilot was slumped over against the Dep wheel, and the weight of his

limp body was pushing the control forward so that the bomber remained in

its mad dive. Beside the limp pilot was the co-pilot, flopped over

against the side of the compartment and looking for all the world like a

man dead tired who had simply leaned over to brace himself and catch a

couple of minutes of sleep. That is, he looked like such a man except

for the crimson blood that gushed from a gaping wound in his neck just

below the left ear.

After one look at the hideous sight Dawson flew into action. Bracing

himself behind the pilot's seat, he grabbed the limp figure by the

shoulders and pulled him back on the seat. Holding him upright with one

hand, he reached around and opened the catch of the pilot's safety

harness. That done, he braced himself again and eased the man to the

floor boards. The pilot's eyes fluttered open, and his lips sprayed

drops of blood as he tried to speak. Dawson didn't have time to listen.

He leaped into the pilot's seat, grabbed the control wheel with one

hand, hauled back on it steadily, and eased off the throttles with his

other hand.

Little by little the crazy downward plunge of the B-25 eased off. The

plane began to climb back into the sky. There was still brilliant white

light all about. It had a silverish tint to it, and Dawson had the

impression that he was flying straight through a phosphorescent ocean.

In an abstract way be realized the white light was caused by flares that

had been dropped from high above the bomber and were bringing it out in

clear relief for a mysterious aerial night raider.

"Where is it, and what?" Dawson gasped as he squinted his eyes in the

brilliant glare. "It's just one ship. I can tell it from the guns. But

what--"

He cut the rest off short and heeled the B-25 way over on its wing and

brought it around and up in a climbing turn with the engines wide open.

He did so because he had caught a glimpse of a shadow boring in and up

at him from the left. Just a shadow, but he knew instinctively that it

was another plane. At the top of its climb, he whipped the bomber over

and around in the opposite direction. The bomber was neither a P-40 nor

a Lockheed Lightning, and his heart seemed to stand still in his throat

as he waited for the big craft to come around. With each passing second,

he expected to hear the savage yammer of guns blazing away at him.

As a matter of fact, a moment later he did hear guns, but they came from

the B-25, not from the other plane. They came from the port side, and

impulsively he jerked his head around in that direction. As he did so,

he saw a sight that brought a wild cry of joy from his lips. Silhouetted

against the brilliant background of light was a Nazi-marked Arada AR-95

twin-pontoon seaplane. He could see the silverish disc described by the

spinning propeller, but the aircraft seemed to be standing still.

Rather, it seemed to be held motionless in the air by twin streams of

tracer smoke that reached out to it from the B-25.

It was motionless for only a moment, and then suddenly a sheet of flame

spewed out from under its engine cowling. Fire mushroomed out in all

directions, and in the wink of an eye, the Arada completely disappeared,

and there was just a great cloud of fire hanging in the flare-lighted

heavens. To Dawson the cloud seemed to hang not for seconds, but for

minutes. And then, as though an invisible cable had been cut, the cloud

of fire dropped straight downward.

"Sweet shooting! Pretty!" Dawson heard his own voice yell. "And I've got

a hunch that it was good old Freddy who nailed her! If it--"

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