Frank Nelsen's mouth twisted. "That's enough, pal," he said. "I better go do my sitting tight someplace else. Keep your Archer handy. Thanks, and see you..."

Within forty minutes David Lester was showing him some pictures that a hopper had brought in from a vault in a surface-asteroid.

On the screen, great, mottled shapes moved through a lush forest. Thousands of tiny, flitting bat-like creatures—miniature pterodactyls of the terrestrial Age of Reptiles—hovered over a swamp, where millions of insects hung like motes in the light of the low sun. A much larger pterodactyl, far above, glided gracefully over a cliff, and out to sea, its long, beaked head turning watchfully.

"Hey!" Nelsen said mildly, as his jaded mind responded.

Lester nodded. "They were on Earth, too—as the Martians must have been—exploring and taking pictures, during the Cretaceous Period. Oh, but there's a perhaps even better sequence! Like the Martians, they had a world-wrecking missile, [p. 118] which they were building in space. Spherical. About six miles in diameter, I calculate. Shall I show you?"

"No... I think I'll toddle over to the offices, Les. Keep wearing those Archers, people. Glad the kid likes to play in his..."

Nelsen had donned his own Seven, with the helmet fastened across his chest by a strap. At the KRNH office, there was a letter, which luckily hadn't been sent out to Post Eight. The tone was more serious than that of any that Nance Codiss had sent before.

"Dear Frank: I'm actually coming your way. I'll be stopping to work at the Survey Station Hospital on Mars for two months en route..."

He read that far when he heard the sirens and saw the flashes of defending batteries that were trying to ward off missiles from Pallastown. He latched his helmet in place. He was headed for the underground galleries when the first impacts came. He saw four domes vanish in flashes of fire. Then he didn't run anymore. He had his small rocket launcher, from the office. If they ever came close enough... But of course they'd stay thousands of miles off. He got to the nearest fallen dome as fast as he could. Everybody had been in armor, but there were over a hundred dead. Emergency and rescue crews were operating efficiently.

He glanced around for indications. No explosive, chemical or nuclear, had yet been used. But there was the old Jolly Lad trick: Accelerate a chunk of asteroid-material to a speed of several miles per second by grasping it with your gloved hands, while the shoulder-ionic of your armor was at full power. Start at a great distance, aim your missile with your body, let it go... Impact would be sheer, blasting incandescence. A few hundred chunks of raw metal could finish Pallastown... Were these just crazy, wild slobs whooping it up, or real crud provided with a purpose and reward? Either way, here was the eternal danger to any Belt settlement.