sector. Just wiped our boys out. Those damnable flame-throwers and bullet-proof tanks, supported by God knows how many hundreds of planes. It's hell, Lance! Headquarters thinks they're going to unleash a general attack all along the line in the next few days. And our resources—well, our back's against the wall. We're coming to death grips, man."

even-fifteen....

Lance pressed the starting button. His four motors choked, sputtered, then burst into a sweet, full-throated roar. He glanced over at Praed's plane, spun the small helicopter props over and pushed down the accelerator. The plane quivered, stuck its snout up and leaped like an arrow into the clean, darkening air. Lance gunned it to ten thousand feet, Praed following him neatly. Praed was a good pilot, no doubt about that. The two fighting machines hung for a second side by side; Lance eased off his helicopters and streaked away into the gloom at a breath-taking five hundred.

"I hope," muttered Colonel Douglas as the two tiny scouts sped from sight, "that everything goes smoothly. They're the men to do it, anyway. No better pilots in the whole service."

"Wot abaht that there Captain Hay, sir?" put in Wells, the mechanic, standing nearby. Colonel Douglas smiled.

"Oh, of course!" he amended. "I'd forgotten Hay!"

Once more they were anticipated! Lance, at thirty thousand feet—the Rahl-Diesels, with their perfected superchargers, were easily capable of a ceiling of sixty—had hovered above the position of Hill 333, pulled on his gas-mask and said through the microphone to Praed:

"Power dive to three thousand feet. Release your flares and take in all you can before they send up planes. We'll take 'em by surprise, but there's bound to be a fight. Got it?"

The steady reply came back: "Okay."

Whereat Lance set his teeth in his customary fighting grin, jockied up his ammunition belts, glanced at the flare-parachutes folded alongside the cabin and plunged the scout in a dive that tipped six hundred and fifty miles and threatened to crack the speed dial.

ut surprise? Nothing doing! Like angry hornets five Slav planes pounced on them at ten thousand feet. They'd been waiting there! Lance cursed savagely. He flung off his flares, Immelmanned up, and in less than two seconds had sent one Slav shrieking to the ground in flames. For the moment forgetting Praed, Lance followed after his flares, three Slavs attempting to sight their guns on the twisting, writhing, corkscrewing body of his Goshawk. He knew there were disintegrating flame-throwers below, but gambled on their not shooting because of the enemy scouts diving with him.

Flattening out at perhaps a thousand feet, Lance threw a rapid stare at the bulk of Hill 333. He drew his breath in sharply.

Lit dazzlingly by the bleaching white of the slow-floating flares, huge rows of the dreaded Slav tanks were clustered all around the hill!

As he looked, ten more Slav planes came soaring up from the ground. This was too hot! The thought of Praed stabbed through Lance's whirling brain; he pulled the scout around, doubled over the three closing in on his tail, and belched lead for an instant at one he'd caught off guard. It collapsed like a punctured paper bag. Lance grinned and bounded to the upper regions. The two other Slavs let the crazy Yank go for the instant, joining forces with the ten brothers coming to help them out.

Lance, again at ten thousand, looked for Praed. Far above, he glimpsed two planes, circling and diving. Praed seemed to be fighting, at any rate! As he watched, the two scouts catapulted still higher; became tiny, almost imperceptible dots, visible only in the reflected light of the flares. Then Lance felt a shaft of ice along his spine.

The two planes had practically hugged each other for a second. Then one of them fell away, somersaulted, tumbled down wildly—out of control.

It passed Lance like a falling rock.

And it was Praed's scout!

"My God!" muttered Lance. "He's been shot down!"

he next moment the twelve Slavs were on him like a hurricane. Motors roaring, Lance stood them off—flinging a burst of lead here, dropping out of range here, looping, catapulting, zooming—fazing them with every trick he knew. A dozen times he sensed the zinging wrath of storms of bullets, a dozen times he escaped death by the breadth of a hair. Not for nothing was he called one of the best pilots in the service, second only to Hay.

He bagged another of the Slavs, and began to think of getting away. Praed had proved himself, but had been killed in doing so. He's got the dope on Hill 333. Now for the getaway.

As he whirled, another Slav plane—the one that had got Praed—dove down from above. And, in the last second of the ghostly light of the flares, Lance's bewildered eyes saw the face of the man inside it.

That face was Praed's!

Praed, inside an enemy scout! Praed firing at him! Praed, not dead!

Lance was dumbfounded. He almost died, just then, for he felt his senses stagger, and relaxed his maneuvering. Praed! What—how—He couldn't begin to reckon it out.

If the flares hadn't died at that instant, Lance must have been shot down. Luckily, they expired; pitch darkness washed over everything. The lights on the Slav planes switched on, their prying beams fingering the sky for Lance's plane. But Lance was somewhat himself again. He jammed the accelerator down, dove headlong, flattened out and streaked for home. The speed of the Goshawk snatched him faithfully from the jaws of the Slavs. He left then milling behind. Left Praed with them!

olonel Douglas was waiting for him. Lance's face must have been a study, for the elder man laughed shortly. "You need a drink!" he decided, and poured out a stiff tot of rum. Lance downed it with a nervous gulp and sprawled in a chair, the glass held weakly in quivering fingers.

Dead silence brooded over the whole base. Even the muttering guns were still. One green-shaded light threw the maps on Douglas' desk into glaring prominence; besides that, there was no illumination anywhere in the 'drome. Lance knew he had a thumping headache and that his eyes were lumps of pain. The glass fell from his hand and crashed on the floor. It seemed to stir the young captain, for at last he looked up and met the colonel's inquiring gaze.

"Well?" The colonel was terse.

"I saw Praed shot down," Lance mumbled, as if to himself, "and then I saw him—"

"Wait!" Douglas strode rapidly to the door which led to the other rooms of the building. After glancing to right and left, with an explanatory "Walls sometimes have ears, you know!" he locked the door carefully again, came back, and said:

"Talk in a whisper! How about Hill 333?"

"Tanks massed there," Lance said slowly. "Yeh, I saw that, all right. They must be intending an attack on that sector. But—but—Praed—"

"What happened?"

Lance told him of the scrap, how Praed's plane had apparently rubbed wings with a Slav and then tumbled down, out of control. He concluded: "I figured that Praed was all right, that he'd proved himself, that he wasn't a spy, as we'd thought. But the next moment I saw him in the Slav plane that