We moved along an autumn-smelling trail that wandered through trees from which leaves fell in a constant erratic shower. The air was cold, a touch of sea-wind pimpling my flesh. I was in the forefront of the horde, with Cuff and Skagarach, Old One and Trutch and my wife Nessa. Now a scout came running back toward us, his gait a half-ape, half-dog loping. He spoke to Cuff in the hoarse brief gutturals of their primitive tongue. "Trip-wires ahead," Cuff said. "Tell 'em, Skagarach." * * * * * The first warning devices, evidently: wires that would set off signals in the headquarters of the Marines, doubtless, when anyone stumbled across them. Bill Cuff laughed. We marched on until the scout halted us with a gesture. Bill picked up Nessa and ran forward and leaped into the air, graceful, a great cat of a man. There were four wires at varying heights. Warned of them, we cleared them all. I would have touched one, but Trutch was at my side watching me. Now we slowed our pace while more scouts prowled ahead. In about five minutes we were halted again, this time by an eight-foot fence of barbed wire whose strands were only inches apart. "Oh, for God's sake," said Cuff, "they plant barbed wire in the woods and leave the trees hanging over it. How knuckleheaded do they think an enemy'd be? Climb up and jump over." He looked at Nessa. "I think we'll leave you here," he said slowly. "Ray cherishes your safety--and I might want a check on his loyalty. Trutch, keep her safe." The big-eared, lank-haired brute folded a paw over her wrist and dragged her to one side. I said sharply, "Treat her easily, you damn orangutan!" and started after them, till someone's open hand caught me on the chest and shoved me rudely on my tail. I got up and Nessa was gone. We moved into the trees. I shinnied up a smooth trunk for a couple of feet. Topping the fence, we launched ourselves into space--we looked like dark monkeys pouncing on a farmer's garden--and came to earth with soft thuds and here and there a jolted grunt. We went forward once more. Now the trees were thinner and up ahead there were strange gleams and reflections in a darkness that appeared deeper than that which we had left behind. Of course, the canopy that looked like forest from the sky; and beneath it, the buildings and the field and the man-made moon. My blood grew a little colder. The incredible consequences of this expedition, if successful, hit me with the kick of a shod hoof. The end of man ... _the end of man_ ... words so staggering you couldn't actually take them in. The end of man. Thanks to me.... The Old Companions were bunched, two hundred strong in a great knot of dimly-seen figures. Bill Cuff said to Skagarach, "Have them spread out. We go in from this side on a wide front."