“Proteus,” she reminded him.
He turned to the hovering protection robot, reluctant to make this final move. He had come to depend on the presence of a mechanical bodyguard, and there was something almost sacrilegious—something taboo—about shutting it down without having a temporary replacement. But when he looked down the slope and saw the lamps of the soldiers who were beating the brush for them, lamps lighted only moments earlier, not even five minutes away now, he reached out, thumbed the stud that opened Proteus’s sliding access panel, and quickly cycled down the machine’s systems with one toggle control until it was totally inactive except for its grav plates, which damped slowly to a complete shutoff, letting the sphere settle softly to the ground without sustaining damage. None of the sensors nodes gleamed from without or within. For the first time in nearly three years, Proteus was “asleep.”
Davis hefted the sphere, pushed it through the narrow tunnel that led into the snow cave, shoved it to the far end of the small chamber. Leah went through next, disappearing from sight, and he brought up the tail end after taking a final look at the approaching, irresistible line of lights that bisected the valley floor. Inside, he required two minutes of hasty work to block off the entrance with snow which had been piled in the entrance tunnel for that purpose. He knew the seal must be clumsily obvious from outside, a blotch on the smooth sweep of the remainder of the drift, but he could do nothing more but trust to the now rather stiff and persistent winds and the whipping clouds of fine, dry snow to conceal his labors as well as the majority of their footprints.
Inside the igloolike dwelling, the air was relatively warm, for there was no wind at all, and what little body heat did escape them was contained in the small area that had been carved out of the white stuff. Snow proved such a good insulator, against even the slightest draft, that he wondered why he had not thought of this the first night out rather than erecting the flimsy and dangerous lean-to. He supposed it was because the survival instinct had not yet bloomed from the bud he had then possessed.
They sat, quietly, shoulder to shoulder with Proteus at their feet, still and mute.
They could hear a faint wind.
As yet, nothing more.
Davis felt as if they were mice, huddled there in the darkness, anxiously waiting for the cats to pass by and leave them so they might resume life as normal mice should live it. And, like the mouse in his wall nest, he felt as much relieved as afraid. There was at least two, and possibly three feet of snow on every side of them except one. Snow would either hold their body heat within the little room he had excavated or filter the warm air into coolness before it reached the world outside. On the one side where there was no snow, the back of the chamber, there was a rock wall, which should certainly prevent the emanations of bodily heat from reaching the delicate sensors of the thermal detectors carried by the Alliance troops. If things worked as they planned, as they thought they should, the searchers would stomp right by them and collide with the sentries at the top of the ridge. They would then conclude that their quarry had somehow gotten through the pass—either before the line of sentries had been posted or in the first moments of the watch when the soldiers’ attentions were not as sharp as they should have been. Excuses would be made, heads would roll, but at least he and Leah would get by unscathed.
He hoped.
“Have they gone by and—” she began.
He shushed her.
Outside, the faint sound of footsteps, breathing, and a few muttered commands passed as if down a line in chain communication, echoed in the night and found their way through the shell of the snow cave.
Davis sat very still, as if the slightest movement might cause the drift in which they hid to collapse and blow away on the wind, leaving them exposed and defenseless.