I got up, my head ringing, tasting blood in my mouth. The chipped pavement seemed to rock under me. The Bolo was coming up fast. Running was no good. I had to have a better idea.

I dropped flat and switched my suit control to maximum insulation.

The silvery surface faded to dull black. A two-foot square of tattered paper fluttered against a projecting edge of concrete; I reached for it, peeled it free, then fumbled with a pocket flap, brought out a permatch, flicked it alight. When the paper was burning well, I tossed it clear. It whirled away a few feet, then caught in a clump of grass.

"Keep moving, damn you!" I whispered. The swearing worked. The gusty wind pushed the paper on. I crawled a few feet and pressed myself into a shallow depression behind the slab. The Bolo churned closer; a loose treadplate was slapping the earth with a rhythmic thud. The burning paper was fifty feet away now, a twinkle of orange light in the deep twilight.

At twenty yards, looming up like a pagoda, the Bolo halted, sat rumbling and swiveling its rust-streaked turret, looking for the radiating source its I-R had first picked up. The flare of the paper caught its electronic attention. The turret swung, then back. It was puzzled. It whooped again, then reached a decision.

Ports snapped open. A volley of antipersonnel slugs whoofed into the target; the scrap of paper disappeared in a gout of tossed dirt.

I hugged the ground like gold lamé hugs a torch singer's hip, and waited; nothing happened. The Bolo sat, rumbling softly to itself. Then I heard another sound over the murmur of the idling engine, a distant roaring, like a flight of low-level bombers. I raised my head half an inch and took a look. There were lights moving beyond the field-the paired beams of a convoy approaching from the town.

The Bolo stirred, moved heavily forward until it towered over me no more than twenty feet away. I saw gun ports open high on the armored facade-the ones that housed the heavy infinite repeaters. Slim black muzzles slid into view, hunted for an instant, then depressed and locked.

They were bearing on the oncoming vehicles that were spreading out now in a loose skirmish line under a roiling layer of dust. The watchdog was getting ready to defend its territory-and I was caught in the middle. A blue-white floodlight lanced out from across the field, glared against the scaled plating of the Bolo. I heard relays click inside the monster fighting machine, and braced myself for the thunder of her battery…

There was a dry rattle.

The guns traversed, clattering emptily. Beyond the fence the floodlight played for a moment longer against the Bolo, then moved on across the ramp, back, across and back, searching…

Once more the Bolo fired its empty guns. Its red I-R beams swept the scene again; then relays snicked, the impotent guns retracted, the port covers closed.

Satisfied, the Bolo heaved itself around and moved off, trailing a stink of ozone and ether, the broken tread thumping like a cripple on a stair.

I waited until it disappeared in the gloom two hundred yards away, then cautiously turned my suit control to vent off the heat. Full insulation could boil a man in his own gravy in less than half an hour.

The floodlight had blinked off now. I got to my hands and knees and started toward the perimeter fence. The Bolo's circuits weren't tuned as fine as they should have been; it let me go.

There were men moving in the glare and dust, beyond the rusty lacework that had once been a chain-link fence. They carried guns and stood in tight little groups, staring across toward the blockhouse.

I moved closer, keeping flat and avoiding the avenues of yellowish light thrown by the headlamps of the parked vehicles-halftracks, armored cars, a few light manned tanks.

There was nothing about the look of this crowd that impelled me to leap up and be welcomed. They wore green uniforms, and half of them sported beards. What the hell: had Castro landed in force?

I angled off to the right, away from the big main gate that had been manned day and night by guards with tommyguns. It hung now by one hinge from a scarred concrete post, under a cluster of dead polyarcs in corroded brackets. The big sign that had read GLENN AEROSPACE CENTER-AUTHORIZED PERSONNEL ONLY lay face down in hip-high underbrush.

More cars were coming up. There was a lot of talk and shouting; a squad of men formed and headed my way, keeping to the outside of the fallen fence.

I was outside the glare of the lights now. I chanced a run for it, got over the sagged wire and across a potholed blacktop road before they reached me. I crouched in the ditch and watched as the detail dropped men in pairs at fifty-yard intervals.

Another five minutes and they would have intercepted me-along with whatever else they were after. I worked my way back across an empty lot and found a strip of lesser underbrush lined with shaggy trees, beneath which a patch of cracked sidewalk showed here and there.

Several things were beginning to be a little clearer now: The person who had pushed the button to bring me out of stasis hadn't been around to greet me, because no one pushed it. The automatics, triggered by some malfunction, had initiated the recovery cycle.

The system's self-contained power unit had been designed to maintain a starship crewman's minimal vital functions indefinitely, at reduced body temperature and metabolic rate. There was no way to tell exactly how long I had been in the tank. From the condition of the fence and the roads, it had been more than a matter of weeks-or even months.

Had it been a year… or more? I thought of Ginny and the boy, waiting at home-thinking the old man was dead, probably. I'd neglected them before for my work, but not like this…

Our house was six miles from the base, in the foothills on the other side of town. It was a long walk, the way I felt-but I had to get there.

Two hours later I was clear of the town, following the river bank west.

I kept having the idea that someone was following me. But when I stopped to listen, there was never anything there; just the still, cold night and the frogs, singing away patiently in the low ground to the south.

When the ground began to rise, I left the road and struck off across the open field. I reached a wide street, followed it in a curve that would bring me out at the foot of Ridge Avenue-my street. I could make out the shapes of low, rambling houses now.

It had been the kind of residential section the local Junior Chamber members had hoped to move into some day. Now the starlight that filtered through the cloud cover showed me broken windows, doors that sagged open, automobiles that squatted on flat, dead tires under collapsing car shelters-and here and there a blackened, weed-grown foundation, like a gap in a row of rotting teeth.

The neighborhood wasn't what it had been. How long had I been away? How long…?

I fell down again, hard this time. It wasn't easy getting up. I seemed to weigh a hell of a lot for a guy who hadn't been eating regularly. My breathing was very fast and shallow now, and my skull was getting ready to split and give birth to a live alligator-the ill-tempered kind. It was only a few hundred yards more; but why the hell had I picked a place halfway up a hill?

I heard the sound again-a crackle of dry grass. I got the pistol out and stood flatfooted in the middle of the street, listening hard.

All I heard was my stomach growling. I took the pistol off cock and started off again, stopped suddenly a couple of times to catch him off guard; nothing. I reached the corner of Ridge Avenue, started up the slope. Behind me a stick popped loudly.

I picked that moment to fall down again. Heaped leaves saved me from another skinned knee. I rolled over against a low fieldstone wall and propped myself against it. I had to use both hands to cock the pistol. I stared into the dark, but all I could see were the little lights whirling again. The pistol got heavy; I put it down, concentrated on taking deep breaths and blinking away the fireflies.