“This is actually the power supply,” Pinario said. “Cunning. Also, the instructions to the soldiers emanate from it. High-frequency transmission, from a shot-box.”

Opening the back of the citadel, he showed his boss the container of shot.

Each shot was an instruction iota. For an assault pattern, the shot were tossed up, vibrated, allowed to settle in a new sequence. Randomness was thereby achieved. But since there was a finite number of shot, there had to be a finite number of patterns.

“We’re trying them all,” Pinario said.

“And there’s no way to speed it up?”

“It’ll just have to take time. It may run through a thousand patterns and then—”

“The next one,” Wiseman finished, “may have them make a ninety-degree turn and start firing at the nearest human being.”

Pinario said somberly, “Or worse. There’re a good deal of ergs in that power pack. It’s made to put out for five years. But if it all went into something simultaneously—”

“Keep testing,” Wiseman said.

They looked at each other and then at the citadel. The soldiers had by now almost reached it. Suddenly one wall of the citadel flapped down, a gun-muzzle appeared, and the soldiers had been flattened.

“I never saw that before,” Pinario murmured.

For a moment nothing stirred. And then the lab’s child-dummy, seated among its toys, said, “I’m tired of that. Do something else.”

With a tremor of uneasiness, the two men watched the soldiers pick themselves up and regroup.

Two days later, Wiseman’s superior, a heavy-set, short, angry man with popping eyes, appeared in his office. “Listen,” Fowler said, “you get those damn toys out of testing. I’ll give you until tomorrow.” He started back out, but Wiseman stopped him.

“This is too serious,” he said. “Come down to the lab and I’ll show you.”

Arguing all the way, Fowler accompanied him to the lab. “You have no concept of the capital some of these firms have invested in this stuff!” he was saying as they entered. “For every product you’ve got represented here, there’s a ship or a warehouse full on Luna, waiting for official clearance so it can come in!”

Pinario was nowhere in sight. So Wiseman used his key, by-passing the hand-signals that opened up the testing room.

There, surrounded by toys, sat the dummy that the lab men had built. Around it the numerous toys went through their cycles. The racket made Fowler wince.

“This is the item in particular,” Wiseman said, bending down by the citadel. A soldier was in the process of squirming on his belly toward it. “As you can see, there are a dozen soldiers. Given that many, and the energy available to them, plus the complex instruction data—”

Fowler interrupted, “I see only eleven.”

“One’s probably hiding,” Wiseman said.

From behind them, a voice said, “No, he’s right.” Pinario, a rigid expression on his face, appeared. “I’ve been having a search made. One is gone.”

The three men were silent.

“Maybe the citadel destroyed him,” Wiseman finally suggested.

Pinario said, “There’s a law of matter dealing with that. If it ‘destroyed’ him—what did it do with the remains?”

“Possibly converted him into energy,” Fowler said, examining the citadel and the remaining soldiers.

“We did something ingenious,” Pinario said, “when we realized that a soldier was gone. We weighed the remaining eleven plus the citadel. Their combined weight is exactly equal to that of the original set—the original dozen soldiers and the citadel. So he’s in there somewhere.” He pointed at the citadel, which at the moment was pinpointing the soldiers advancing toward it.

Studying the citadel, Wiseman had a deep intuitive feeling. It had changed. It was, in some manner, different.

“Run your tapes,” Wiseman said.

“What?” asked Pinario, and then he flushed. “Of course.” Going to the child-dummy, he shut it off, opened it, and removed the drum of video recording tape. Shakily, he carried it to the projector.

They sat watching the recording sequences flash by: one assault after another, until the three of them were bleary-eyed. The soldiers advanced, retreated, were fired on, picked themselves up, advanced again…

“Stop the transport,” Wiseman said suddenly.

The last sequence was re-run.

A soldier moved steadily toward the base of the citadel. A missile, fired at him, exploded and for a time obscured him. Meanwhile, the other eleven soldiers scurried in a wild attempt to mount the walls. The soldier emerged from the cloud of dust and continued. He reached the wall. A section slid back.

The soldier, blending with the dingy wall of the citadel, used the end of his rifle as a screwdriver to remove his head, then one arm, then both legs. The disassembled pieces were passed into the aperture of the citadel. When only the arm and rifle remained, that, too, crawled into the citadel, worming blindly, and vanished. The aperture slid out of existence.

After a long time, Fowler said in a hoarse voice, “The presumption by the parent would be that the child had lost or destroyed one of the soldiers. Gradually the set would dwindle—with the child getting the blame.”

Pinario said, “What do you recommend?”

“Keep it in action,” Fowler said, with a nod from Wiseman. “Let it work out its cycle. But don’t leave it alone.”

“I’ll have somebody in the room with it from now on,” Pinario agreed.

“Better yet, stay with it yourself,” Fowler said.

To himself, Wiseman thought: Maybe we all better stay with it. At least two of us, Pinario and myself.

I wonder what it did with the pieces, he thought.

What did it make?

By the end of the week, the citadel had absorbed four more of the soldiers.

Watching it through a monitor, Wiseman could see in it no visible change. Naturally. The growth would be strictly internal, down out of sight.

On and on the eternal assaults, the soldiers wriggling up, the citadel firing in defense. Meanwhile, he had before him a new series of Ganymedean products. More recent children’s toys to be inspected.

“Now what?” he asked himself.

The first was an apparently simple item: a cowboy costume from the ancient American West. At least, so it was described. But he paid only cursory attention to the brochure: the hell with what the Ganymedeans had to say about it.

Opening the box, he laid out the costume. The fabric had a gray, amorphous quality. What a miserably bad job, he thought. It only vaguely resembled a cowboy suit; the lines seemed unformed, hesitant. And the material stretched out of shape as he handled it. He found that he had pulled an entire section of it into a pocket that hung down.

“I don’t get it,” he said to Pinario. “This won’t sell.”

“Put it on,” Pinario said. “You’ll see.”

With effort, Wiseman managed to squeeze himself into the suit. “Is it safe?” he asked.

“Yes,” Pinario said. “I had it on earlier. This is a more benign idea. But it could be effective. To start it into action, you fantasize.”

“Along what lines?”

“Any lines.”

The suit made Wiseman think of cowboys, and so he imagined to himself that he was back at the ranch, trudging along the gravel road by the field in which black-faced sheep munched hay with that odd, rapid grinding motion of their lower jaws. He had stopped at the fence—barbed wire and occasional upright posts—and watched the sheep. Then, without warning, the sheep lined up and headed off, in the direction of a shaded hillside beyond his range of vision.

He saw trees, cypress growing against the skyline. A chicken hawk, far up, flapped its wings in a pumping action … as if, he thought, it’s filling itself with more air, to rise higher. The hawk glided energetically off, then sailed at a leisurely pace. Wiseman looked for a sign of its prey. Nothing but the dry mid-summer fields munched flat by the sheep. Frequent grasshoppers. And, on the road itself, a toad. The toad had burrowed into the loose dirt; only its top part was visible.