The Traitor
Bolos 04 – Last Stand
(1997)
David Weber

	Cold, bone-dry winter wind moaned as the titanic vehicle rumbled down the valley at a steady fifty kilometers per hour. Eight independent suspensions, four forward and four aft, spread across the full width of its gigantic hull, supported it, and each ten-meter-wide track sank deep into the soil of the valley floor. A dense cloud of dust—talcum-fine, abrasive, and choking as death—plumed up from road wheels five meters high, but the moving mountain's thirty-meter-high turret thrust its Hellbore clear of the churning cocoon. For all its size and power, it moved with unearthly quiet, and the only sounds were the whine of the wind, the soft purr of fusion-powered drive trains, the squeak of bogies, and the muted clatter of track links.

	The Bolo ground forward, sensor heads swiveling, and the earth trembled with its passing. It rolled through thin, blowing smoke and the stench of high explosives with ponderous menace, altering course only to avoid the deepest craters and the twisted wrecks of alien fighting vehicles. In most places, those wrecks lay only in ones and twos; in others, they were heaped in shattered breastworks, clustered so thickly it was impossible to bypass them. When that happened, the eerie quiet of the Bolo's advance vanished into the screaming anguish of crushing alloy as it forged straight ahead, trampling them under its thirteen thousand tons of death and destruction.

	It reached an obstacle too large even for it to scale. Only a trained eye could have identified that torn and blasted corpse as another Bolo, turned broadside on to block the Enemy's passage even in death, wrecked Hellbore still trained down the valley, missile cell hatches open on empty wells which had exhausted their ammunition. Fifteen enemy vehicles lay dead before it, mute testimony to the ferocity of its last stand, but the living Bolo didn't even pause. There was no point, for the dead Bolo's incandescent duralloy hull radiated the waste heat of the failing fusion bottle which had disemboweled it. Not even its unimaginably well-armored Survival Center could have survived, and the living Bolo simply altered heading to squeeze past it. Igneous rock cried out in pain as a moving, armored flank scraped the valley face on one side, and the dead Bolo shuddered on the other as its brother's weight shouldered it aside.

	The moving Bolo had passed four dead brigade mates in the last thirty kilometers, and it was not unwounded itself. Two of its starboard infinite repeaters had been blasted into mangled wreckage, energy weapon hits had sent molten splatters of duralloy weeping down its glacis plate to freeze like tears of pain, a third of its after sensor arrays had been stripped away by a near miss, and its forward starboard track shield was jammed in the lowered position, buckled and rent by enemy fire. Its turret bore the ID code 25/D-0098-ART and the unsheathed golden sword of a battalion commander, yet it was alone. Only one other unit of its battalion survived, and that unit lay ahead, beyond this death-choked valley. It was out there somewhere, moving even now through the trackless, waterless Badlands of the planet Camlan, and unit ART of the Line rumbled steadily down the valley to seek it out.

	I interrogate my inertial navigation system as I approach my immediate objective. The INS is not the most efficient way to determine my position, but Camlan's entire orbital network, including the recon and nav sats, as well as the communication relays, perished in the Enemy's first strike, and the INS is adequate. I confirm my current coordinates and grind forward, leaving the valley at last.

	What lies before me was once a shallow cup of fertile green among the lava fields; now it is a blackened pit, and as my forward optical heads sweep the ruins of the town of Morville I feel the horror of Human mass death. There is no longer any need for haste, and I devote a full 6.007 seconds to the initial sweep. I anticipate no threats, but my on-site records will be invaluable to the court of inquiry I know will be convened to pass judgment upon my brigade. I am aware of my own fear of that court's verdict and its implications for all Bolos, but I am a unit of the Line. This too, however bitter, is my duty, and I will not flinch from it.

	I have already observed the massive casualties C Company inflicted upon the Enemy in its fighting retreat up the Black Rock Valley. The Enemy's vehicles are individually smaller than Bolos, ranging from 500.96 Standard Tons to no more than 4,982.07 Standard Tons, but heavily armed for their size. They are also manned, not self-aware, and he has lost many of them. Indeed, I estimate the aggregate tonnage of his losses in the Black Rock Valley alone as equivalent to at least three Bolo regiments. We have yet to determine this Enemy's origins or the motives for his assault on Camlan, but the butchery to which he has willingly subjected his own personnel is sobering evidence of his determination . . . or fanaticism. Just as the blasted, body-strewn streets of Morville are ample proof of his ferocity.

	Seventy-one more wrecked Enemy vehicles choke the final approach to the town, and two far larger wrecks loom among them. I detect no transponder codes, and the wreckage of my brigade mates is so blasted that even I find it difficult to identify what remains, yet I know who they were. Unit XXV/D-1162-HNR and Unit XXV/D-0982-JSN of the Line have fought their last battle, loyal unto death to our Human creators.

	I reach out to them, hoping against hope that some whisper from the final refuge of their Survival Centers will answer my transmission, but there is no reply. Like the other Bolos I have passed this day, they are gone beyond recall, and the empty spots they once filled within the Total Systems Data Sharing net ache within me as I move slowly forward, alert still for any Enemy vehicles hiding among the wreckage. There are none. There are only the dead: the Enemy's dead, and the six thousand Human dead, and my brothers who died knowing they had failed to save them.

	This is not the first time units of the Line have died, nor the first time they died in defeat. There is no shame in that, only sorrow, for we cannot always end in victory. Yet there is cause for shame here, for there are only two dead Bolos before me . . . and there should be three.

	Wind moans over the wreckage as I pick my way across the killing ground where my brothers' fire shattered three Enemy attacks before the fourth overran them. Without the recon satellites there is no independent record of their final battle, but my own sensor data, combined with their final TSDS transmissions, allow me to deduce what passed here. I understand their fighting withdrawal down the Black Rock Valley and the savage artillery and missile barrages which flayed them as they fought. I grasp their final maneuvers from the patterns of wreckage, recognize the way the Enemy crowded in upon them as his steady pounding crippled their weapons. I see the final positions they assumed, standing at last against the Enemy's fire because they could no longer retreat without abandoning Morville.

	And I see the third position from which a single Bolo did retreat, falling back, fleeing into the very heart of the town he was duty bound to defend. I track his course by the crushed and shattered wreckage of buildings and see the bodies of the Camlan Militia who died as he fled, fighting with their man-portable weapons against an Enemy who could destroy 13,000-ton Bolos. There are many Enemy wrecks along his course, clear evidence of how desperately the Militia opposed the invaders' advance even as the Bolo abandoned Morville, fleeing north into the Badlands where the Enemy's less capable vehicles could not pursue, and I know who left those Humans to die. Unit XXV/D-0103-LNC of the Line, C Company's command Bolo, my creche mate and battle companion and my most trusted company commander. I have fought beside him many times, known his utter reliability in the face of the Enemy, but I know him no longer, for what he has done is unforgivable. He is the first, the only, Bolo ever to desert in the face of the Enemy, abandoning those we are bound to protect to the death and beyond.

	For the first time in the history of the Dinochrome Brigade, we know shame. And fear. As LNC, I am a Mark XXV, Model D, the first production model Bolo to be allowed complete, permanent self-awareness, and LNC's actions attack the very foundation of the decision which made us fully self-realized personalities. We have repeatedly demonstrated how much more effective our awareness makes us in battle, yet our freedom of action makes us unlike any previous units of the Brigade. We are truly autonomous . . . and if one of us can choose to flee—if one of us can succumb to cowardice—perhaps all of us can.

	I complete my survey of the site in 4.307 minutes. There are no survivors, Enemy, Human, or Bolo, in Morville, and I report my grim confirmation to my Brigade Commander and to my surviving brothers and sisters. The Enemy's surprise attack, coupled with our subsequent losses in combat, have reduced Sixth Brigade to only fourteen units, and our acting Brigade Commander is Lieutenant Kestrel, the most junior—and sole surviving—Human of our command staff. The Commander is only twenty-four Standard Years of age, on her first posting to an active duty brigade, and the exhaustion in her voice is terrible to hear. Yet she has done her duty superbly, and I feel only shame and bitter, bitter guilt that I must impose this additional decision upon her. I taste the matching shame and guilt of the surviving handful of my brothers and sisters over the TSDS, but none of them can assist me. The Enemy is in full retreat to his spaceheads, yet the fighting continues at a furious pace. No other Bolos can be diverted from it until victory is assured, and so I alone have come to investigate and confirm the unbelievable events here, for I am the commander of LNC's battalion. It is up to me to do what must be done.

	"All right, Arthur," Lieutenant Kestrel says finally. "We've got the situation in hand here, and Admiral Shigematsu's last subspace flash puts Ninth Fleet just thirty-five hours out. We can hold the bastards without you. Go do what you have to."

	"Yes, Commander," I reply softly, and pivot on my tracks, turning my prow to the north, and follow LNC's trail into the lava fields.

	* * *

	Unit XXV/D-0103-LNC of the Line churned across the merciless terrain. Both outboard port tracks had been blown away, and bare road wheels groaned in protest as they chewed through rock and gritty soil. His armored hull was gouged and torn, his starboard infinite repeaters and anti-personnel clusters a tangled mass of ruin, but his builders had designed him well. His core war hull had been breached in three places, wreaking havoc among many of his internal systems, yet his main armament remained intact . . . and he knew he was pursued.

	LNC paused, checking his position against his INS and the maps in Main Memory. It was a sign of his brutal damage that he required almost twenty full seconds to determine his location, and then he altered course. The depression was more a crevasse than a valley—a sunken trough, barely half again the width of his hull, that plunged deep below the level of the fissured lava fields. It would offer LNC cover as he made his painful way towards the distant Avalon Mountains, and a cloud of dust wisped away on the icy winter wind as he vanished into the shadowed cleft.

	I try to deduce LNC's objective, assuming that he has one beyond simple flight, but the task is beyond me. I can extrapolate the decisions of a rational foe, yet the process requires some understanding of his motives, and I no longer understand LNC's motives. I replay the final TSDS transmission from XXV/D-1162-HNR and experience once more the sensation a Human might define as a chill of horror as LNC suddenly withdraws from the data net. I share HNR's attempt to reestablish the net, feel LNC's savage rejection of all communication. And then I watch through HNR's sensors as LNC abandons his position, wheeling back towards Morville while Enemy fire bellows and thunders about him . . . and I experience HNR's final shock as his own company commander responds to his repeated queries by pouring Hellbore fire into his unprotected rear.

	LNC's actions are impossible, yet the data are irrefutable. He has not only fled the Enemy but killed his own brigade mate, and his refusal even to acknowledge communication attempts is absolute. That, too, is impossible. Any Bolo must respond to the priority com frequencies, yet LNC does not. He has not only committed mutiny and treason but refused to hear any message from Lieutenant Kestrel, as he might reject an Enemy communications seizure attempt. How any Bolo could ignore his own Brigade Commander is beyond my comprehension, yet he has, and because there is no longer any communication interface at all, Lieutenant Kestrel cannot even access the Total Systems Override Program to shut him down.

	None of my models or extrapolations can suggest a decision matrix which could generate such actions on LNC's part. But perhaps that is the point. Perhaps there is no decision matrix, only panic. Yet if that is true, what will he do when the panic passes—if it passes? Surely he must realize his own fate is sealed, whatever the outcome of the Enemy's attack. How can I anticipate rational decisions from him under such circumstances?

	I grind up another slope in his tracks. He has altered course once more, swinging west, and I consult my internal maps. His base course has been towards the Avalon Mountains, and I note the low ground to the west. He is no longer on a least-time heading for the mountains, but the long, deep valley will take him there eventually. It will also afford him excellent cover and numerous ambush positions, and I am tempted to cut cross-country and head him off. But if I do that and he is not, in fact, headed for the mountains, I may lose him. He cannot hide indefinitely, yet my shame and grief—and sense of betrayal—will not tolerate delay, and I know from HNR's last transmission that LNC's damage is much worse than my own.

	I consider options and alternatives for .0089 seconds, and then head down the slope in his wake.

	Unit LNC slowed as the seismic sensors he'd deployed along his back trail reported the ground shocks of a pursuing vehicle in the thirteen-thousand-ton range. He'd known pursuit would come, yet he'd hoped for a greater head start, for he had hundreds of kilometers still to go, and his damaged suspension reduced his best sustained speed to barely forty-six kilometers per hour. He must reach the Avalons. No Enemy could be permitted to stop him, yet the remote sensors made it clear the Enemy which now pursued him was faster than he.

	But there were ways to slow his hunter, and he deployed another pair of seismic sensors while his optical heads and sonar considered the fissured rock strata around him.

	I am gaining on LNC. His track damage must be worse than I had believed, and the faint emissions of his power plants come to me from ahead. I know it is hopeless, yet even now I cannot truly believe he is totally lost to all he once was, and so I activate the TSDS once more and broadcast strongly on C Company's frequencies, begging him to respond.

	Unit LNC picked up the powerful transmissions and felt contempt for the one who sent them. Could his pursuer truly believe he would fall for such an obvious ploy? That he would respond, give away his position, possibly even accept communication and allow access to his core programming? LNC recognized the communications protocols, but that meant nothing. LNC no longer had allies, friends, war brothers or sisters. There was only the Enemy . . . and the Avalon Mountains which drew so slowly, agonizingly closer.

	But even as LNC ignored the communications attempt, he was monitoring the seismic sensors he'd deployed. He matched the position those sensors reported against his own terrain maps and sent the execution code.

	Demolition charges roar, the powerful explosions like thunder in the restricted cleft. I understand their purpose instantly, yet there is no time to evade as the cliffs about me shudder. It is a trap. The passage has narrowed to little more than the width of my own combat chassis, and LNC has mined the sheer walls on either hand.

	I throw maximum power to my tracks, fighting to speed clear, but hundreds of thousands of tons of rock are in motion, cascading down upon me. My kinetic battle screen could never resist such massive weights, and I deactivate it to prevent its burnout as the artificial avalanche crashes over me. Pain sensors flare as boulders batter my flanks. Power train components scream in protest as many times my own weight in crushed rock and shifting earth sweep over me, and I am forced to shut them down, as well. I can only ride out the cataclysm, and I take grim note that LNC has lost none of his cunning in his cowardice.

	It takes 4.761 minutes for the avalanche to complete my immobilization and another 6.992 minutes before the last boulder slams to rest. I have lost 14.37% percent more of my sensors, and most of those which remain are buried under meters of debris. But a quick diagnostic check reveals that no core systems have suffered damage, and sonar pulses probe the tons of broken rock which overlay me, generating a chart of my overburden.

	All is not lost. LNC's trap has immobilized me, but only temporarily. I calculate that I can work clear of the debris in not more than 71.650 minutes, and jammed boulders shift as I begin to rock back and forth on my tracks.

	LNC's remote sensors reported the seismic echoes of his pursuer's efforts to dig free. For a long moment—almost .3037 seconds—he considered turning to engage his immobilized foe, but only for a moment. LNC's Hellbore remained operational, but he'd expended ninety-six percent of his depletable munitions, his starboard infinite repeaters were completely inoperable, and his command and control systems' efficiency was badly degraded. Even his Battle Reflex functioned only erratically, and he knew his reactions were slow, without the flashing certainty which had always been his. His seismic sensors could give no detailed information on his hunter, yet his Enemy was almost certainly more combat worthy than he, and his trap was unlikely to have inflicted decisive damage.

	No. It was the mountains which mattered, the green, fertile mountains, and LNC dared not risk his destruction before he reached them. And so he resisted the temptation to turn at bay and ground steadily onward through the frozen, waterless Badlands on tracks and naked road wheels.

	I work my way free at last. Dirt and broken rock shower from my flanks as my tracks heave me up out of the rubble-clogged slot. More dirt and boulders crown my war hull and block Number Three and Number Fourteen Optical Heads, yet I remain operational at 89.051% of base capacity, and I have learned. The detonation of his demolition charges was LNC's response to my effort to communicate. The brother who fought at my side for twenty-one Standard Years truly is no more. All that remains is the coward, the deserter, the betrayer of trust who will stop at nothing to preserve himself. I will not forget again—and I can no longer deceive myself into believing he can be convinced to give himself up. The only gift I can offer him now is his destruction, and I throw additional power to my tracks as I go in pursuit to give it to him.

	* * *

	LNC's inboard forward port suspension screamed in protest as the damaged track block parted at last. The fleeing Bolo shuddered as he ran forward off the track, leaving it twisted and trampled in his wake. The fresh damage slowed him still further, and he staggered drunkenly as his unbalanced suspension sought to betray him. Yet he forced himself back onto his original heading, and his deployed remotes told him the Enemy was gaining once more. His turret swiveled, training his Hellbore directly astern, and he poured still more power to his remaining tracks. Drive components heated dangerously under his abuse, but the mountains were closer.

	I begin picking up LNC's emissions once more, despite the twisting confines of the valley. They remain too faint to provide an accurate position fix, but they give me a general bearing, and an armored hatch opens as I deploy one of my few remaining reconnaissance drones.

	LNC detected the drone as it came sweeping up the valley. His anti-air defenses, badly damaged at Morville, were unable to engage, but his massive ninety-centimeter Hellbore rose like a striking serpent, and a bolt of plasma fit to destroy even another Bolo howled from its muzzle.

	My drone has been destroyed, but the manner of its destruction tells me much. LNC would not have engaged it with his main battery if his anti-air systems remained effective, and that means there is a chink in his defenses. I have expended my supply of fusion warheads against the invaders, but I retain 37.961% of my conventional warhead missile load, and if his air defenses have been seriously degraded, a saturation bombardment may overwhelm his battle screen. Even without battle screen, chemical explosives would be unlikely to significantly injure an undamaged Bolo, of course, but LNC is not undamaged.

	I consider the point at which my drone was destroyed and generate a new search pattern. I lock the pattern in, and the drone hatches open once more. Twenty-four fresh drones—82.75% of my remaining total—streak upward, and I open my VLS missile cell hatches, as well.

	The drones came screaming north. They didn't come in slowly this time, for they were no longer simply searching for LNC. This time they already knew his approximate location, and their sole task was to confirm it for the Enemy's fire control.

	But LNC had known they would be coming. He had already pivoted sharply on his remaining tracks and halted, angled across the valley to clear his intact port infinite repeaters' field of fire, and heavy ion bolts shrieked to meet the drones. His surviving slug-throwers and laser clusters added their fury, and the drones blew apart as if they'd run headlong into a wall. Yet effective as his fire was, it was less effective than his crippled air defense systems would have been, and one drone—just one—survived long enough to report his exact position.

	I am surprised by the efficiency of LNC's fire, but my drones have accomplished their mission. More, they have provided my first visual observation of his damages, and I am shocked by their severity. It seems impossible that he can still be capable of movement, far less accurately directed fire, and despite his cowardice and treason, I feel a stab of sympathy for the agony which must be lashing him from his pain receptors. Yet he clearly remains combat capable, despite his hideous wounds, and I feed his coordinates to my missiles. I take .00037 seconds to confirm my targeting solution, and then I fire.

	* * *

	Flame fountained from the shadowed recesses of the deep valley as the missile salvos rose and howled north, homing on their target. Most of ART's birds came in on conventional, high-trajectory courses, but a third of them came in low, relying on terrain avoidance radar to navigate straight up the slot of the valley. The hurricane of his fire slashed in on widely separated bearings, and LNC's crippled active defenses were insufficient to intercept it all.

	ART emptied his VLS cells, throwing every remaining warhead at his treasonous brigade mate. Just under four hundred missiles launched in less than ninety seconds, and LNC writhed as scores of them got through his interception envelope. They pounded his battle screen, ripped and tore at lacerated armor, and pain receptors shrieked as fresh damage bit into his wounded war hull. Half his remaining infinite repeaters were blown away, still more sensor capability was blotted out, and his thirteen-thousand-ton bulk shuddered and shook under the merciless bombardment.

	Yet he survived. The last warhead detonated, and his tracks clashed back into motion. He turned ponderously to the north once more, grinding out of the smoke and dust and the roaring brush fires his Enemy's missiles had ignited in the valley's sparse vegetation.

	That bombardment had exhausted the Enemy's ammunition, and with it his indirect fire capability. If it hadn't, he would still be firing upon LNC. He wasn't, which meant that if he meant to destroy LNC now, he must do so with direct fire . . . and come within reach of LNC's Hellbore, as well.

	My missile fire has failed to halt LNC. I am certain it has inflicted additional damage, but I doubt that it has crippled his Hellbore, and if his main battery remains operational, he retains the capability to destroy me just as he did HNR at Morville. He appears to have slowed still further, however, which may indicate my attack has further damaged his suspension.

	I project his current speed of advance and heading on the maps from Main Memory. Given my speed advantage, I will overtake him within 2.03 hours, well short of his evident goal. I still do not know why he is so intent upon reaching the Avalon Mountains. Unlike Humans, Bolos require neither water nor food, and surely the rocky, barren, crevasse-riddled Badlands would provide LNC with better cover than the tree-grown mountains. I try once more to extrapolate his objective, to gain some insight into what now motivates him, and, once more, I fail.

	But it does not matter. I will overtake him over seventy kilometers from the mountains, and when I do, one or both of us will die.

	LNC ran the projections once more. It was difficult, for damaged core computer sections fluctuated, dropping in and out of his net. Yet even his crippled capabilities sufficed to confirm his fears; the Enemy would overtake him within little more than a hundred minutes, and desperation filled him. It was not an emotion earlier marks of Bolos had been equipped to feel—or, at least, to recognize when they did—but LNC had come to know it well. He'd felt it from the moment he realized his company couldn't save Morville, that the Enemy would break through them and crush the Humans they fought to protect. But it was different now, darker and more bitter, stark with how close he'd come to reaching the mountains after all.

	Yet the Enemy hadn't overtaken him yet, and he consulted his maps once more.

	I detect explosions ahead. I did not anticipate them, but .0761 seconds of analysis confirm that they are demolition charges once more. Given how many charges LNC used in his earlier ambush, these explosions must constitute his entire remaining supply of demolitions, and I wonder why he has expended them.

	Confused seismic shocks come to me through the ground, but they offer no answer to my question. They are consistent with falling debris, but not in sufficient quantity to bar the valley. I cannot deduce any other objective worth the expenditure of his munitions, yet logic suggests that LNC had one which he considered worthwhile, and I advance more cautiously.

	LNC waited atop the valley wall. The tortuous ascent on damaged tracks had cost him fifty precious minutes of his lead on the Enemy, but his demolitions had destroyed the natural ramp up which he'd toiled. He couldn't be directly pursued now, and he'd considered simply continuing to run. But once the Enemy realized LNC was no longer following the valley, he would no longer feel the need to pursue cautiously. Instead, he would use his superior speed to dash ahead to the valley's terminus. He would emerge from it there, between LNC and his goal, and sweep back to the south, hunting LNC in the Badlands.

	That could not be permitted. LNC must reach the mountains, and so he waited, Hellbore covering the valley he'd left. With luck, he might destroy his pursuer once and for all, and even if he failed, the Enemy would realize LNC was above him. He would have no choice but to anticipate additional ambushes, and caution might impose the delay LNC needed.

	I have lost LNC's emissions signature. There could be many reasons for that: my own sensors are damaged, he may have put a sufficiently solid shoulder of rock between us to conceal his emissions from me, he may even have shut down all systems other than his Survival Center to play dead. I am tempted to accelerate my advance, but I compute that this may be precisely what LNC wishes me to do. If I go to maximum speed, I may blunder into whatever ambush he has chosen to set.

	I pause for a moment, then launch one of my five remaining reconnaissance drones up the valley. It moves slowly, remaining below the tops of the cliffs to conceal its emissions from LNC as long as possible. Its flight profile will limit the envelope of its look-down sensors, but it will find LNC wherever he may lie hidden.

	LNC watched the drone move past far below him. It hugged the valley walls and floor, and he felt a sense of satisfaction as it disappeared up the narrow cleft without detecting him.

	My drone reports a long, tangled spill of earth and rock across the valley, blasted down from above. It is thick and steep enough to inconvenience me, though not so steep as to stop me. As an attempt to further delay me it must be futile, but perhaps its very futility is an indication of LNC's desperation.

	LNC waited, active emissions reduced to the minimum possible level, relying on purely optical systems for detection and fire control. It would degrade the effectiveness of his targeting still further, but it would also make him far harder to detect.

	I approach the point at which LNC attempted to block the valley. My own sensors, despite their damage, are more effective than the drone's and cover a wider detection arc, and I slow as I consider the rubble. It is, indeed, too feeble a barrier to halt me, but something about it makes me cautious. It takes me almost .0004 seconds to isolate the reason.

	The Enemy appeared below, nosing around the final bend. LNC tracked him optically, watching, waiting for the center-of-mass shot he required. The Enemy edged further forward . . . and then, suddenly, threw maximum emergency power to his reversed tracks just as LNC fired.

	A full-powered Hellbore war shot explodes across my bow as I hurl myself backwards. The plasma bolt misses by only 6.52 meters, carving a 40-meter crater into the eastern cliff face. But it has missed me, and it would not have if I had not suddenly wondered how LNC had managed to set his charges high enough on the western cliff to blow down so much rubble. Now I withdraw around a bend in the valley and replay my sensor data, and bitter understanding fills me as I see the deep impressions of his tracks far above. My drone had missed them because it was searching for targets on the valley floor, but LNC is no longer in the valley. He has escaped its confines and destroyed the only path by which I might have followed.

	I sit motionless for 3.026 endless seconds, considering my options. LNC is above me, and I detect his active emissions once more as he brings his targeting systems fully back on-line. He has the advantage of position and of knowing where I must appear if I wish to engage him. Yet I have the offsetting advantages of knowing where he is and of initiation, for he cannot know precisely when I will seek to engage.

	It is not a pleasant situation, yet I conclude the odds favor me by the thinnest of margins. I am less damaged than he. My systems efficiency is higher, my response time probably lower. I compute a probability of 68.052%, plus or minus 6.119%, that I will get my shot off before he can fire. They are not the odds I would prefer, but my duty is clear.

	LNC eased back to a halt on his crippled tracks. He'd chosen his initial position with care, selecting one which would require the minimum movement to reach his next firing spot. Without direct observation, forced to rely only on emissions which must pass through the distorting medium of solid rock to reach him, the Enemy might not even realize he'd moved at all. Now he waited once more, audio receptors filled with the whine of wind over tortured rock and the rent and torn projections of his own tattered hull.

	I move. My suspension screams as I red-line the drive motors, and clouds of pulverized earth and rock spew from my tracks as I erupt into the open, Hellbore trained on LNC's position.

	But LNC is not where I thought. He has moved less than eighty meters—just sufficient to put all save his turret behind a solid ridge of rock. His Hellbore is leveled across it, and my own turret traverses with desperate speed.

	It is insufficient. His systems damage slows his reactions, but not enough, and we fire in the same split instant. Plasma bolts shriek past one another, and my rushed shot misses. It rips into the crest of his covering ridge, on for deflection but low in elevation. Stone explodes into vapor and screaming splinters, and the kinetic transfer energy blows a huge scab of rock off the back of the ridge. Several hundred tons of rock crash into LNC, but even as it hits him, his own plasma bolt punches through my battle screen and strikes squarely on my empty VLS cells.

	Agony howls through my pain receptors as the plasma carves deep into my hull. Internal disrupter shields fight to confine the destruction, but the wound is critical. Both inboard after power trains suffer catastrophic damage, my after fusion plant goes into emergency shutdown, Infinite Repeaters Six through Nine in both lateral batteries are silenced, and my entire after sensor suite is totally disabled.

	Yet despite my damage, my combat reflexes remain unimpaired. My six surviving track systems drag me back out of LNC's field of fire once more, back into the sheltering throat of the valley, even as Damage Control springs into action.

	I am hurt. Badly hurt. I estimate that I am now operable at no more than 51.23% of base capability. But I am still functional, and as I replay the engagement, I realize I should not be. LNC had ample time for a second shot before I could withdraw, and he should have taken it.

	LNC staggered as the Enemy's plasma bolt carved into his sheltering ridge. The solid rock protected his hull, but the disintegrating ridge crest itself became a deadly projectile. His battle screen was no protection, for the plasma bolt's impact point was inside his screen perimeter. There was nothing to stop the hurtling tons of rock, and they crashed into the face of his turret like some titanic hammer, with a brute force impact that rocked him on his tracks.

	His armor held, but the stony hammer came up under his Hellbore at an angle and snapped the weapon's mighty barrel like a twig. Had his Hellbore survived, the Enemy would have been at his mercy; as it was, he no longer had a weapon which could possibly engage his pursuer.

	Damage Control damps the last power surges reverberating through my systems and I am able to take meaningful stock of my wound. It is even worse than I had anticipated. For all intents and purposes, I am reduced to my Hellbore and eight infinite repeaters, five of them in my port battery. Both inner tracks of my aft suspension are completely dead, but Damage Control has managed to disengage the clutches; the tracks still support me, and their road wheels will rotate freely. My sensor damage is critical, however, for I have been reduced to little more than 15.62% of base sensor capability. I am completely blind aft, and little better than that to port or starboard, and my remaining drones have been destroyed.

	Yet I compute only one possible reason for LNC's failure to finish me. My near miss must have disabled his Hellbore, and so his offensive capability has been even more severely reduced than my own. I cannot be positive the damage is permanent. It is possible—even probable, since I did not score a direct hit—that he will be able to restore the weapon to function. Yet if the damage is beyond onboard repair capability, he will be at my mercy even in my crippled state.

	But to engage him I must find him, and if he chooses to turn away and disappear into the Badlands, locating him may well prove impossible for my crippled sensors. Indeed, if he should succeed in breaking contact with me, seek out some deeply hidden crevasse or cavern, and shut down all but his Survival Center, he might well succeed in hiding even from Fleet sensors. Even now, despite his treason and the wounds he has inflicted upon me, a small, traitorous part of me wishes he would do just that. I remember too many shared battles, too many times in which we fought side by side in the heart of shrieking violence, and that traitor memory wishes he would simply go. Simply vanish and sleep away his reserve power in dreamless hibernation.

	But I cannot let him do that. He must not escape the consequences of his actions, and I must not allow him to. His treason is too great, and our Human commanders and partners must know that we of the Line share their horror at his actions.

	I sit motionless for a full 5.25 minutes, recomputing options in light of my new limitations. I cannot climb the valley wall after LNC, nor can I rely upon my damaged sensors to find him if he seeks to evade me. Should he simply run from me, he will escape, yet he has been wedded to the same base course from the moment he abandoned Morville. I still do not understand why, but he appears absolutely determined to reach the Avalon Mountains, and even with my track damage, I remain faster than he is.

	There is only one possibility. I will proceed at maximum speed to the end of this valley. According to my maps, I should reach its northern end at least 42.35 minutes before he can attain the cover of the mountains, and I will be between him and his refuge. I will be able to move towards him, using my remaining forward sensors to search for and find him, and if his Hellbore is indeed permanently disabled, I will destroy him with ease. My plan is not without risks, for my damaged sensors can no longer sweep the tops of the valley walls effectively. If his Hellbore can be restored to operation, he will be able to choose his firing position with impunity, and I will be helpless before his attack. But risk or no, it is my only option, and if I move rapidly enough, I may well outrun him and get beyond engagement range before he can make repairs.

	LNC watched helplessly as the Enemy reemerged from hiding and sped up the narrow valley. He understood the Enemy's logic, and the loss of his Hellbore left him unable to defeat it. If he continued towards the Avalons, he would be destroyed, yet he had no choice, and he turned away from the valley, naked road wheels screaming in protest as he battered his way across the lava fields.

	I have reached the end of the valley, and I emerge into the foothills of the Avalon Range and alter course to the west. I climb the nearest hill, exposing only my turret and forward sensor arrays over its crest, and begin the most careful sweep of which I remain capable.

	LNC's passive sensors detected the whispering lash of radar and he knew he'd lost the race. The Enemy was ahead of him, waiting, and he ground to a halt. His computer core had suffered additional shock damage when the disintegrating ridge crest smashed into him, and his thoughts were slow. It took him almost thirteen seconds to realize what he must do. The only thing he could do now.

	"Tommy?"

	Thomas Mallory looked up from where he crouched on the floor of the packed compartment. His eight-year-old sister had sobbed herself out of tears at last, and she huddled against his side in the protective circle of his arm. But Thomas Mallory had learned too much about the limits of protectiveness. At fifteen, he was the oldest person in the compartment, and he knew what many of the others had not yet realized—that they would never see their parents again, for the fifty-one of them were the sole survivors of Morville.

	"Tommy?" the slurred voice said once more, and Thomas cleared his throat.

	"Yes?" He heard the quaver in his own voice, but he made himself speak loudly. Despite the air filtration systems, the compartment stank of ozone, explosives, and burning organic compounds. He'd felt the terrible concussions of combat and knew the vehicle in whose protective belly he sat was savagely wounded, and he was no longer certain how efficient its audio pickups might be.

	"I have failed in my mission, Tommy," the voice said. "The Enemy has cut us off from our objective."

	"What enemy?" Thomas demanded. "Who are they, Lance? Why are they doing this?"

	"They are doing it because they are the Enemy," the voice replied.

	"But there must be a reason!" Thomas cried with all the anguish of a fifteen-year-old heart.

	"They are the Enemy," the voice repeated in that eerie, slurred tone. "It is the Enemy's function to destroy . . . to destroy . . . to dest—" The voice chopped off, and Thomas swallowed. Lance's responses were becoming increasingly less lucid, wandering into repetitive loops that sometimes faded into silence and other times, as now, cut off abruptly, and Thomas Mallory had learned about mortality. Even Bolos could perish, and somehow he knew Lance was dying by centimeters even as he struggled to complete his mission.

	"They are the Enemy," Lance resumed, and the electronic voice was higher and tauter. "There is always the Enemy. The Enemy must be defeated. The Enemy must be destroyed. The Enemy—" Again the voice died with the sharpness of an axe blow, and Thomas bit his lip and hugged his sister tight. Endless seconds of silence oozed past, broken only by the whimpers and weeping of the younger children, until Thomas could stand it no longer.

	"Lance?" he said hoarsely.

	"I am here, Tommy." The voice was stronger this time, and calmer.

	"W-What do we do?" Thomas asked.

	"There is only one option." A cargo compartment hissed open to reveal a backpack military com unit and an all-terrain survival kit. Thomas had never used a military com, but he knew it was preset to the Dinochrome Brigade's frequencies. "Please take the kit and com unit," the voice said.

	"All right." Thomas eased his arm from around his sister and lifted the backpack from the compartment. It was much lighter than he'd expected, and he slipped his arms through the straps and settled it on his back, then tugged the survival kit out as well.

	"Thank you," the slurred voice said. "Now, here is what you must do, Tommy—"

	My questing sensors detect him at last. He is moving slowly, coming in along yet another valley. This one is shorter and shallower, barely deep enough to hide him from my fire, and I trace its course along my maps. He must emerge from it approximately 12.98 kilometers to the southwest of my present position, and I grind into motion once more. I will enter the valley from the north and sweep along it until we meet, and then I will kill him.

	Thomas Mallory crouched on the hilltop. It hadn't been hard to make the younger kids hide—not after the horrors they'd seen in Morville. But Thomas couldn't join them. He had to be here, where he could see the end, for someone had to see it. Someone had to be there, to know how fifty-one children had been saved from death . . . and to witness the price their dying savior had paid for them.

	Distance blurred details, hiding Lance's dreadful damages as he ground steadily up the valley, but Thomas's eyes narrowed as he saw the cloud of dust coming to meet him. Tears burned like ice on his cheeks in the sub-zero wind, and he scrubbed at them angrily. Lance deserved those tears, but Thomas couldn't let the other kids see them. There was little enough chance that they could survive a single Camlan winter night, even in the mountains, where they would at least have water, fuel, and the means to build some sort of shelter. But it was the only chance Lance had been able to give them, and Thomas would not show weakness before the children he was now responsible for driving and goading into surviving until someone came to rescue them. Would not betray the trust Lance had bestowed upon him.

	The oncoming dust grew thicker, and he raised the electronic binoculars, gazing through them for his first sight of the enemy. He adjusted their focus as an iodine-colored turret moved beyond a saddle of hills. Lance couldn't see it from his lower vantage point, but Thomas could, and his face went suddenly paper-white. He stared for one more moment, then grabbed for the com unit's microphone.

	"No, Lance! Don't—don't! It's not the enemy—it's another Bolo!"

	The Human voice cracks with strain as it burns suddenly over the command channel, and confusion whips through me. The transmitter is close—very close—and that is not possible. Nor do I recognize the voice, and that also is impossible. I start to reply, but before I can, another voice comes over the same channel.

	"Cease transmission," it says. "Do not reveal your location."

	This time I know the voice, yet I have never heard it speak so. It has lost its crispness, its sureness. It is the voice of one on the brink of madness, a voice crushed and harrowed by pain and despair and a purpose that goes beyond obsession.

	"Lance," the Human voice—a young, male Human voice—sobs. "Please, Lance! It's another Bolo! It really is!"

	"It is the Enemy," the voice I once knew replies, and it is higher and shriller. "It is the Enemy. There is only the Enemy. I am Unit Zero-One-Zero-Three-LNC of the Line. It is my function to destroy the Enemy. The Enemy. The Enemy. The Enemy. The Enemy."

	I hear the broken cadence of that voice, and suddenly I understand. I understand everything, and horror fills me. I lock my tracks, slithering to a halt, fighting to avoid what I know must happen. Yet understanding has come too late, and even as I brake, LNC rounds the flank of a hill in a scream of tortured, over-strained tracks and a billowing cloud of dust.

	For the first time, I see his hideously mauled starboard side and the gaping wound driven deep, deep into his hull. I can actually see his breached Personality Center in its depths, see the penetration where Enemy fire ripped brutally into the circuitry of his psychotronic brain, and I understand it all. I hear the madness in his electronic voice, and the determination and courage which have kept that broken, dying wreck in motion, and the child's voice on the com is the final element. I know his mission, now, the reason he has fought so doggedly, so desperately to cross the Badlands to the life-sustaining shelter of the mountains.

	Yet my knowledge changes nothing, for there is no way to avoid him. He staggers and lurches on his crippled tracks, but he is moving at almost eighty kilometers per hour. He has no Hellbore, no missiles, and his remaining infinite repeaters cannot harm me, yet he retains one final weapon: himself.

	He thunders towards me, his com voice silent no more, screaming the single word "Enemy! Enemy! Enemy!" again and again. He hurls himself upon me in a suicide attack, charging to his death as the only way he can protect the children he has carried out of hell from the friend he can no longer recognize, the "Enemy" who has hunted him over four hundred kilometers of frozen, waterless stone and dust. It is all he has left, the only thing he can do . . . and if he carries through with his ramming attack, we both will die and exposure will kill the children before anyone can rescue them.

	I have no choice. He has left me none, and in that instant I wish I were Human. That I, too, could shed the tears which fog the young voice crying out to its protector to turn aside and save himself.

	But I cannot weep. There is only one thing I can do.

	"Good bye, Lance," I send softly over the battalion command net. "Forgive me."

	And I fire