"We have to stand above this," LeMarr protested. "If we allow ourselves to get dragged into this hate and violence -- " He appealed to Patterson. "Why is V-Stephens locked up? He's no crazier than she is."

"True," Patterson agreed. "But she's crazy on our side. We don't lock up that kind of lunatic."

LeMarr moved away from him. "Are you going out and fight, too? Along­side Gannet and his soldiers?"

"I want to avoid the war," Patterson said dully.

"Can it be done?" Gannet demanded. An avid glow winked briefly behind his pale, blue eyes and then faded out.

"Maybe it can be done. Why not? Unger coming back here adds a new element."

"If the future can be changed," Gannet said slowly, "then maybe we have a choice of various possibilities. If there's two possible futures there may be an infinite number. Each branching off at a different point." A granite mask slid over his face. "We can use Unger's knowledge of the battles."

"Let me talk to him," Lieutenant West interrupted excitedly. "Maybe we can get a clear idea of the webfoot battle-strategy. He's probably gone over the battles in his mind a thousand times."

"He'd recognize you," Gannet said. "After all, he served under your com­mand."

Patterson was deep in thought. "I don't think so," he said to West. "You're a lot older than David Unger."

West blinked. "What do you mean? He's a broken-down old man and I'm still in my twenties."

"David Unger is fifteen," Patterson answered. "At this point you're almost twice his age. You're already a commissioned officer on the Lunar policy-level staff. Unger isn't even in the Military Service. He'll volunteer when war breaks out, as a buck private without experience or training. When you're an old man, commanding the Wind Giant, David Unger will be a middle-aged nonentity working one of the gun turrets, a name you won't even know."

"Then Unger is already alive?" Gannet said, puzzled.

"Unger is someplace around, waiting to step onto the stage." Patterson filed the thought away for future study; it might have valuable possibilities. "I don't think he'll recognize you, West. He may never even have seen you. The Wind Giant is a big ship."

West quickly agreed. "Put a bug-system on me, Gannet. So the command staff can have the aud and vid images of what Unger says."

In the bright mid-morning sunlight, David Unger sat moodily on his park bench, gnarled fingers gripping his aluminum cane, gazing dully at the passers-by.

To his right a robot gardener worked over the same patch of grass again and again, its metallic eye-lenses intently fastened on the wizened, hunched-over figure of the old man. Down the gravel path a group of loitering men sent random comments to the various monitors scattered through the park, keep­ing the relay system open. A bare-bosomed young woman sunbathing by the pool nodded faintly to a pair of soldiers pacing around the park, within con­stant sight of David Unger.

That morning there were a hundred people in the park. All were inte­grated elements of the screen surrounding the half-dozing, resentful old man.

"All right," Patterson said. His car was parked at the edge of the plot of green trees and lawns. "Remember not to overexcite him. V-Stephens revived him originally. If something goes wrong with his heart we can't get V-Stephens to pump him back."

The blond young lieutenant nodded, straightened his immaculate blue tunic and slid onto the sidewalk. He pushed his helmet back and briskly strode down the gravel path, toward the center of the park. As he approached, the lounging figures moved imperceptibly. One by one they took up positions on the lawns, on the benches, in groups here and there around the pool.

Lieutenant West stopped at a drinking-fountain and allowed the robot water-brain to find his mouth with a jet of ice-cold spray. He wandered slowly away and stood for a moment, arms loose at his sides, vacantly watching a young woman as she removed her clothes and stretched out languidly on a multi-colored blanket. Her eyes shut, red lips parted, the woman relaxed with a grateful sigh.

"Let him speak to you first," she said faintly, to the lieutenant standing a few feet from her, one black boot on the edge of a bench. "Don't start the conversation."

Lieutenant West watched her a moment longer and then continued along the path. A passing heavy-set man said swiftly in his ear. "Not so fast. Take your time and don't appear to hurry."

"You want to give the impression you have all day," a hatchet-faced nurse greeted, as she passed him wheeling a baby carriage.

Lieutenant West slowed almost to a halt. He aimlessly kicked a bit of gravel from the path into the wet bushes. Hands deep in his pockets he wan­dered over to the central pool and stood gazing absently into its depths. He lit a cigarette, then bought an ice cream bar from a passing robot salesman.

"Spill some on your tunic, sir," the robot's speaker instructed faintly. "Swear and start dabbing at it."

Lieutenant West let the ice cream melt in the warm summer sun. When some had dripped down his wrist onto his starched blue tunic he scowled, dug out his handkerchief, dipped it in the pool, and began clumsily to wipe the ice cream away.

On his bench, the scar-faced old man watched with his one good eye, gripping his aluminum cane and cackling happily. "Watch out," he wheezed. "Look out there!"

Lieutenant West glanced up in annoyance.

"You're dripping more," the old man cackled, and lay back in weak amuse­ment, toothless mouth slack with pleasure.

Lieutenant West grinned good-naturedly. "I guess so," he admitted. He dropped the melting half-eaten ice cream bar into a disposal slot and finished cleaning his tunic. "Sure is warm," he observed, wandering vaguely over.

"They do a good job," Unger agreed, nodding his bird-like head. He peered and craned his neck, trying to make out the insignia markings on the young soldier's shoulder. "You with the rocketeers?"

"Demolition," Lieutenant West said. As of that morning his insignia had been changed. "Ba-3."

The old man shuddered. He hawked and spat feverishly into the nearby bushes. "That so?" He half-rose, excited and fearful, as the lieutenant started to move away. "Say, you know, I was in the Ba-3 years ago." He tried to make his voice sound calm and casual. "Long before your time."

Amazement and disbelief slid over Lieutenant West's handsome blond face. "Don't kid me. Only a couple guys from the old group are still alive. You're pulling my leg."

"I was, I was," Unger wheezed, fumbling with trembling haste at his coat pocket. "Say, look at this. Stop a minute and I'll show you something." Rever­ent and awed, he held out his Crystal Disc. "See? You know what this is?"

It Lieutenant West gazed down at the metal a long time. Real emotion welled up inside him; he didn't have to counterfeit it. "Can I examine it?" he asked finally.

Unger hesitated. "Sure," he said. "Take it."

"That's right," Unger said. "You remember?" He returned it to his pocket. "No, you weren't even alive, then. But you heard about it, haven't you?"

"Yes," West said. "I've heard about it many times."

"And you haven't forgotten? A lot of people forgot that, what we did there."

"I guess we took a beating that day," West said. He sat down slowly on the bench beside the old man. "That was a bad day for Earth."

"We lost," Unger agreed. "Only a few of us got out of there. I got to Luna. I saw Earth go, piece by piece, until there was nothing left. It broke my heart. I cried until I lay like a dead thing. We were all weeping, soldiers, workmen, standing there helpless. And then they turned their missiles on us."

The lieutenant licked his dry lips. "Your Commander didn't get out, did he?"