"Milla," he said finally, "I think—" he gripped her wrist gently and removed her hand from his forearm "—that I should be ashamed of myself."

  "Why? I've seen how hard you're working at being a gentleman, but you shouldn't strain yourself. I'm flattered that you enjoy looking at me—why does it bother you?" She asked the question simply, and his face reddened.

  "Because of what I'm thinking when I do it." He straightened his shoulders. "You're a stranger here. You've lost everything you ever knew—your friends, your world. . . . And I'm fifty-nine years old, Milla. You don't need an oversexed geriatric lech trying to—"

  He broke off in astonishment at her totally unexpected reaction. It was laughter. Not cutting, dismissive laughter, but soft, genuine amusement . . . touched, he realized, with more than just an edge of world-weary sorrow that sat strangely on her fresh, young face.

  "I'm sorry, Dick," she said, and her lovely voice was soft. She touched his cheek before he could draw back, and those surprisingly strong fingers were gentle. "I'm not laughing at you—it's just that I keep forgetting how little you know about me." His expression showed his confusion, and her smile faded just a bit. "How old do you think I am, Dick?"

  "What?" He looked at her for a moment, then frowned. "I don't know," he said slowly. "When I first saw you, I'd've said eighteen or nineteen. But with all you've seen and done, you have to be older than that, don't you?" He shook his head. She couldn't be much older than that. "Twenty-five?" he hazarded uncertainly, and she laughed again, almost sadly.

  "Chronologically," she said, and something in her tone told him she was approaching the point with care, "and bearing in mind the time dilation effect of all the time I've spent at relativistic velocities, I am—or was when this started—a bit over a hundred and thirty." He swallowed, his eyes wide, and she gave him a wry smile. "Biologically, of course, I'm younger than that. Only eighty-three."

  He stared at her. Eighty-three? Impossible! She was a child! He started to speak, then stopped, remembering the way she'd healed.

  "Eighty-three?" he asked finally, amazed by how calm he sounded, and she nodded. "Just what is the average life span where you come from, Milla?"

  "About a hundred and twenty," she said steadily, and he shook his head.

  "You folks do all your aging in a hurry at the end or something?" he asked slowly.

  "No. We age at the same proportional rate we always did. Or most of us do." She smiled, but for the first time, it did not touch her eyes. "You see, there was a reason I reacted so strongly when you suggested I might not be human, Dick. My grandfather survived the bio attack on Midgard, and I've heard a lot of that kind of thing because in a sense I'm not . . . not really."

  "What—" He paused and licked his lips, even more shaken by the carefully hidden pain in her expression than by what she had just said. He reached out and touched her wrist. "What exactly does that mean?" he asked, forcing his voice to sound level.

  "It's a bit complicated," she said, and her eyes thanked him for controlling his surprise. "You see, the Kangas were short on time, so instead of whipping up a new bug from scratch, they modified a nasty little parasite from Delta Pavonis. It wasn't so much a biological weapon as an organic one—and a nasty one, at that. Essentially, it was transmitted as an airborne bacteria and matured into a multicellular parasite rather like a Terran slime mold that invaded the respiratory and alimentary systems and used the circulatory system to get around its host's body. The parasite itself didn't look like much—just a double handful of protoplasmic ooze that scavenged its hosts for its own needs until they died of starvation or respiratory failure. If that didn't kill them, something very like cancer set in . . . and if anyone actually managed to survive that, the parasite simply went on growing until it clogged the arteries.

  "The beauty of it, from the Kangas' viewpoint, wasn't just that it was lethal in so many different ways, but that they'd already been playing around with it for a couple of decades. They had its life cycle down pat and they'd been working on ways to aim it at specific DNA/RNA groups. That was what made it perfect for Midgard, because only one species on the planet used DNA at all: man. Actually, the biochemistry on Midgard isn't all that much different from Terra's, bearing in mind that we're talking two entirely different biospheres, but it uses a different complex of amino acids.

  "So they revamped their parasite, accelerated its growth cycle, and dusted Midgard with it. Before we realized what they'd done, everyone on the planet was infected."

  She looked out to sea, her face drawn, and Aston surrendered to a sudden impulse. He slid closer to her and reached one arm around her. Not really in an embrace, far less a caress, but simply to let her know he was there. She looked back at him and smiled, her eyes suspiciously bright.

  "Anyway," she said in a voice which was just too calm, "it performed to specs. According to the records, it was incredibly painful, too, so perhaps it was merciful that it killed so quickly in most cases. The actual death rate was something like 99.8%. Out of just over two million people, there were exactly 5,757 survivors.

  "But—" her eyes flashed suddenly, and he saw the she-tiger in her smile once more "—they'd expected a hundred-percent kill. They should've gotten one, too. The best theory is that their little horror was unstable and they got an unexpected mutation. Whatever, one tiny batch didn't kill everyone it infected. Most of them, yes, but not all. And in the case of those it didn't kill, it became not a parasite, but a symbiote. Not only that, it piggy-backed itself onto their chromosomes."

  "Symbiote? Piggy-backed? I'm afraid I'm not with you yet, Milla," he said gently.

  "It's simple, really." She turned to face him fully. "I mass about sixty-six kilos, but I tip the scales at just under sixty-eight. The other two kilos is my symbiote."

  "That . . . 'protoplasmic ooze' you mentioned?" he asked levelly.

  "That's right. Only it's not as greedy as the original version." She smiled mirthlessly. "You might say it's a case of mutual advantage; it lives off my respiratory and digestive systems, and, in return, it protects its environment: me."

  "Those wounds . . ."

  "Exactly. It used its own mass to seal the ruptured tissues while it kickstarted the 'regular' healing process. It even pulled me out of shock by tightening itself down around my arteries. It takes good care of me, because without me it dies."

  "My God," he murmured, his voice touched not with disgust but with awe, and she responded with a more natural smile.

  "I can't complain," she said. "It does some other nice things, too. It's infected my chromosomes. Effectively, I've got a couple of extra genes—dominants, I might add. And my symbiote's not a very gracious host; it eats anything—bacteria, viruses, whatever—that isn't tagged with 'our' genetic code. Which means, of course, that things like cancer and the common cold never bother me. On the other hand, even though I can eat just about anything in an emergency, my symbiote gives me fits over some things—like alcohol—and it also means that transurge would be all but impossible if I suffered catastrophic damage; unless they're cloned ahead of time, transplants don't carry the right genetic code, so they're rejected automatically. And if I'd been born with genetic birth defects, there wouldn't've been a damned thing that could be done for me—because the symbiote locks in the defect and won't let go. Even impacted wisdom teeth can be a real pain; they keep regenerating." She shrugged once more.

  "On the other hand," she said softly, "it seems to regard old age the same way it does any other disease."

  "You mean—?"

  "I mean that every living organism eventually 'forgets' how to regenerate itself . . . except people like me." She grinned crookedly. "That's one reason some Normals don't much care for us. Polite people pretend not to know it, but there're names for us. 'Thuselah' is the kindest—from 'Methuselah'—but the others are a lot nastier. It's easy enough to understand. The people who use those names get old and die; we don't. Why shouldn't they resent us?"

  "But surely no
t everyone does," he said, and she shook her head.

  "No. Some Normals see our women as brood mares," she said grimly. "We're not all that fertile—which is probably just as well, since our ova regenerate, too, and we stay fertile—but we tend towards multiple births, and all our children are born with the symbiote and pass it to all their children. For some reason we haven't quite figured out, we're just as fertile with 'normal' humans as with each other, so some male Normals see us as a way to beget 'immortal' children of their own." She brushed hair out of her eyes, and this time he understood the half-wry, half-bitter wisdom of the old eyes in her young face.

  "Listen to me! You must be thinking we're some kind of persecuted minority! We aren't, really, but sometimes we feel a bit hunted and harried. Only about half the Midgard population is Thuselah, and the percentage is a lot lower everywhere else—there're less than a billion of us even now. The funny thing is how many of us feel most at home in the service. Maybe it's because the chance of dying by violence is so much higher there. I know there was a time in my life when I felt unspeakably guilty because I knew I would never get old—at least, not as long as my symbiote holds out. I suspect we're drawn to the military out of a need to share the mortality of the non-Thuselahs."

  She gave the tiny toss of her head he was coming to realize was associated with the shifting of mental gears.

  "The Navy and the Corps are glad to get us, especially in the interceptor squadrons. Fighters are a youngster's game, and our bodies and reflexes stay young while we go right on gathering experience. The casualty rate catches up with most of us in the end, however good we are, but that's fair. No one makes us hang on and hang on the way we do. We . . . just do. It's almost addictive."

  "I know," he said softly. She looked at him curiously, but he wasn't quite ready to talk about his own impending retirement from active duty . . . or what those duties had been. "I've known a lot of fighter jocks in my time," he said instead. "The one thing they all dread is getting too old to strap on a fighter."

  "That's the way it is," she agreed with a sigh. "Actually, it's even more addictive for a Thuselah, because we tend to be so good at it. We've got extraordinary reflexes—again, thanks to our symbiotes. Our neural impulses move about twenty percent faster than the norm, so we can get more out of a fighter. And when we have to, we can go a long time without sleep, because our symbiotes scavenge the fatigue products out of our blood. In a real emergency, they actually supply us with energy. It's a survival tactic for them; they keep us going so we can both survive. Until they exhaust their own stored energy, anyway. Then they start scavenging our tissues to keep themselves alive. When that happens, we're in trouble. We go into a coma and, without someone to feed us—" she gave him a warm smile "—our poor, stupid symbiote goes right on eating until it kills us both."

  "My God," he said again, regarding her with so much wonder she actually blushed.

  "Doesn't it . . . bother you?" She sounded almost shy.

  "Why should it?" he asked simply. "Oh, the idea will take some getting used to, and I'm not immune to envy, if that's what you mean, but I really don't think it bothers me." He gave her a smile of his own. "And you are human, you know—you're just the new, improved model. If I understand you right, this genetic modification is an acquired survival trait. Eventually, everybody will be like you."

  "I think that part bothers some Normals even more than the fact that they personally don't share it," she admitted. "They think we're some sort of mutant monsters out to supplant 'true' humanity. There were some ugly incidents a couple of hundred years ago."

  "Which only proves stupidity is endemic to the human condition even in the future," he said tartly, and won another smile from her.

  "Maybe. But, Dick, this is important. If I get hurt again, make damned sure none of my blood gets into any open wounds."

  "Why?" He asked the question, but inside he knew the answer already.

  "Because the only way the symbiote can be transmitted—other than during conception—is by direct blood transfer," she said, her face serious, "and it's still deadly. That's why Normal women don't dare conceive by our men; a Thuselah embryo's blood carries the symbiote and kills a Normal mother. There were several cases in the early days, before we understood. With the best hospital facilities available—and I'm talking about modern hospitals, not the primitive facilities you have here and now—the survival rate is under five percent. Without them, it's less than one."

  "I'll remember," he said softly.

  "Good." She reached down and patted his hand where it rested on her ribs. "But in the meantime, youngster—" her smile turned into a grin and her eyes twinkled up at him "—don't worry about my tender years, all right? If you enjoy looking at me, do it."

  "I'll try to bear your advanced age in mind," he said with a grin of his own, "but it's not going to be easy—and I hate to think what anyone who sees me doing it is going to think!"

  "Oh, that's easy," she said airily. "They'll just think I'm you're sugar momma." She produced the period slang with simple pride and looked rather puzzled when he began to laugh.

  CHAPTER TEN

  Morning sunlight flicked wavering patterns through the scuttles to dance on the overhead and glint on the tableware, and Ludmilla Leonovna, late of the Terran Marines, gripped her coffee cup two-handed, propped her elbows on the galley table, and sipped luxuriantly. Her chestnut hair was tousled, falling over the shoulders of another of Aston's tee-shirts. This one carried the Harley-Davidson eagle on its front—it had been a gift from his last XO, whose sense of humor had always been peculiar—and he had to admit it looked far better on her than it ever had on him. Besides, she seemed fascinated by its gaudiness, and she took an almost childlike delight in its bright colors.

  It was odd, he thought, regarding her across the table. Despite her revelations, he hadn't really expected her to invite him into her bunk last night. Nor had he been prepared for the skill and passion she'd exhibited. No doubt he should have; anyone who looked like that and had enjoyed eighty years of practice must have had ample opportunity to get the basics down. Yet there'd been a curious vulnerability to her, as well. Almost a shyness—a sense that she was deliberately lowering some inner, secret barrier.

  She was, he reflected, an incredibly complex individual. Her openness and readiness to cope with her bizarre situation masked it, but the complexity was there, hidden behind a multilayered defense, and he wondered if all "Methuselahs" were like that. Did dealing with shorter-lived "Normals" for decade after decade—watching friends age and fade while they themselves stayed endlessly young—create that sense of a guarded, utterly private core in all of them? And could a "Normal" truly be a "Thuselah's" friend? Even if she opened up with them, allowed them past her guard, could they accept the true depth of the differences between her and them? Intellectually, he could believe she truly was the age she claimed, but his emotions were still catching up with the information. It was an extraordinary sensation to realize that the superb young body sitting across his table from him belonged to a woman—no, he told himself, a lady—even older than he.

  "Ummm." Another thought came to him, and he opened a locker and pulled out a rolled bundle. "I guess I better give this stuff back to you," he said, and extended her blood-stained flight suit.

  "Messy," she said dispassionately, regarding the gory smears of her own dried blood, and her calm expression reminded him anew that this was a warrior. Then she unrolled the bundle, and the iron-nerved professional vanished in a gasp of anguish.

  "Oh . . . my . . . God! What did you use?! A cleaver?"

  This was his own first good look at it since he'd bundled the slashed garment into the locker on The Night, and he had to admit his surgery had been radical. It gaped raggedly open from neck to crotch, and she shook her head sadly as she traced the edge of the cut with a finger.

  "Well, I had to get it off you some way," he said a bit defensively, "and I certainly didn't see any zippers."

  "Zi
ppers?" She flipped the flight suit over and touched a spot on the right shoulder. A razor-sharp seam opened down the back, and she looked up with a chiding expression. "Barbarian!" she snorted, and he felt an edge of relief at the laughter in her voice.

  "I'm sorry," he said, "but it really seemed like the only way."

  "I know, I know," she sighed. She touched something near the left cuff, and his eyes widened as a narrow section of fabric slid back to reveal a wafer-thin instrument panel reaching from cuff to elbow. It was covered with tiny lights and readouts, and very few of the lights were green. "Lordy," she murmured, bending over it. "You don't believe in fractionals."

  "Just what did I do?" he asked curiously, craning his own neck for a better view.

  "Oh, I'd say a megacred or so of damage," she replied. She touched a series of tiny switches, and about half the red lights turned amber. "Could be worse, though."

  "What are you doing?"

  "Running a diagnostic. Hmm. . . ." She fell silent, absorbed in her task, and he possessed his soul in as much patience as he could while she concentrated. It was several minutes before she straightened with a sigh.

  "It may not be too bad, after all," she said. "The com networks're shot to hell, but you missed the sensies."

  "I what?" He looked at her in astonishment. "Just what the hell is that thing, anyway?"

  "My flight suit," she said in surprise, then grinned slyly at his baffled expression. "Oho! Revenge is in my grasp, I see. Maybe I just shouldn't tell you about it."

  "Try it and I'll toss you over the side," he growled.

  "You and what army?" she said saucily, then held up a hand in laughing surrender as he started to rise. "Mercy! I'll talk—I'll talk!"

  "Then give!"

  "Gladly, but I'm not sure where to start." She thought for a moment. "I know more maintenance and field service than design theory, and I doubt your tech base'd be up to the details, even if I had more of them myself, but basically, this is what you'd call my space suit. It's a lot more capable than any suit your space program's come up with yet, though. You can think of it as a computer, and you won't be far wrong."