But Dworn did not even know as yet who had done this night's work.

Suddenly, by the new blaze that still continued, he saw movement, a dull sheen of metal moving, and he froze the gesture that had been about to send him forward into the arena of death.

The infrared was useless; by it the flickering firelight was blinding. Dworn bit his lip in anger at his own lack of precaution, and hastily twisted his sound-receptor control to maximum. The crackling of the flames swelled to a hissing roar, but through it he heard the unmistakable creaking sound of treads. Beyond the smoke moved an indistinct and monstrous shape.

Dworn's jaw muscles set rock-hard and his hand flashed to another control. His turret gun revolved soundlessly, and the crosshairs of the sight danced across the mirrored image of the approaching thing. His finger poised over the firing button, he braced himself to fling his machine into swift evasive action before the enemy's perhaps overwhelming firepower could reply—

The monster lumbered slowly into the light, canted far over and traveling with an odd sidling motion along the steep rubbly slope. Great treads set far out on each side of the squat, ungainly body preserved it against overturning. Its flattened forward turret swiveled nervously from side to side, peering blackly from vision ports steel-shuttered down to squinting slits.

And Dworn relaxed. The red hatred that had blazed up in him subsided into mere disgust; he watched the great machine's wary progress with a familiar, instinctive contempt. It was a scavenger, huge but not very formidable, drawn from afar by the fires which promised loot, salvageable scrap, perhaps even usable parts, fuel or ammunition.... It could not possibly have been responsible for the carnage; such cowardly creatures gave a wide berth to the beetle horde.

The monster ground to a halt amid the wreckage. Then its engine bellowed with sudden power and it spun half round, one tread spraying gravel, and backed hastily away up the slope. And Dworn was aware that the noise of creaking treads had redoubled. He cast about, and saw, laboring upward from below, another big machine, closely similar to the first.

Both scavengers came to a stop, facing one another across the fading of the fires, their unmuffled engines grumbling sullenly. Dworn watched them narrowly, expecting the shooting to begin any moment. But the scavengers' way of life was not one that encouraged reckless valor. After a long minute, a hatch-cover was lifted in the first arrival's armored back; a cautious head thrust forth, and shouted hoarsely, words clear to Dworn's amplified hearing:

"Better go back where you came from, brother. We got here first!"

The other scavenger's turret-hatch also swung slightly open. A different voice answered: "Don't talk foolishness, brother. We've got as much right here as you, and anyway we saw it first!"