Ahead of them the lookouts framed blue emptiness. Below, on direct sight, was but the vaguest blur that meant earth and clouds far beneath. Only the magnification of the microscope brought out the details, and on its screen the unrolling picture showed those three lines broadening and merging to widespread desolation; then the smoke clouds came between to shut off a world reeking with the fumes of destruction. An occasional flash of red wings showed where the units of the A. F. F. were at work. A They beheld a city, below them—and smoking ruins where three great gashes had been torn with torches of flame. To Danny there came a thought that was sickening: it was as if some great three-toed beast had drawn one paw, red with the blood of helpless humans, ripping across the bosom of the land. His number was flashing on the call board that had been registering incessant orders to other craft. He cut in on the Headquarters wave. "O'Rourke—Mountain Division—Unit Five!" he reported. "Do you get my voice or shall I send by key?" The man at Headquarters did not trouble to reply to the question. His voice came faint but clear: "Number Five—O'Rourke—Orders! If that new ship of yours has any speed, show it now! Bear on Washington! Get here as quick as the good Lord will let you! Mountain Division says you've got something good in that sound-dampener; if you have, we need it now!" O'Rourke shot back a crisp acknowledgment; took a reading from two radio beacons; projected them on the map; and pricked a point at their intersection. He had his own ship on a line with the Capitol in a matter of seconds. "And there's hell poppin' there, I'm bettin'! That Headquarters lad didn't tell much—he wouldn't be worth a dime on a newscast—but I gathered there was somethin' doin'." He had spoken more to himself than to his companion who had been a silent listener to the incoming orders. But the Infant replied in his own peculiar way. "The one you saw," he said inquiringly: "he did his dirty work with a little rod or tube, you said?" With an effort, O'Rourke brought his thoughts in line with the question. "Oh, you mean the man-thing I saw in Stobolsk? Yes, that's right; he had a thing like a gun." W