Fuel

The engineers Ava assigned to assess Hope 's return capability were thorough, methodical, and entirely unable to hide the shape of the bad news gathering behind their careful professional language, which was how Darrell understood, three days into their assessment, that whatever they were about to say was going to cost him something significant.

"The ship itself is sound," the lead engineer said, through Ar's translation, standing in Hope 's dim, powered-down cabin for the first time in months — none of them had returned to her since the descent, and Darrell felt the strange, disorienting weight of standing again in the vessel that had carried them into this whole impossible story. "Structurally, she could make the journey. Her systems have held up better than I'd have expected, given the technology gap. But the propulsion requirements for a controlled approach into the Silex Sxar's collapse event are considerably beyond what her current fuel reserves can provide."

"How far beyond," Darrell asked.

The engineer exchanged a glance with her colleague before answering. "Significantly. The kind of controlled navigation required to survive proximity to a stellar collapse — rather than simply being caught in its effects the way you apparently were the first time — demands an energy density well beyond anything Hope 's original systems were designed to carry. We can retrofit the ship to accept a different fuel type. We cannot manufacture the fuel type itself. Not with anything currently available to this settlement's production capacity."

"What fuel type," Rachel asked, already moving toward the readouts the engineers had assembled, her scientist's mind visibly working the problem before the rest of the conversation had even finished.

"A refined stellar catalyst compound," the engineer said. "Historically produced during the era your archive friend calls the Reaching Period — the same generation, I understand, that built the launch facility you visited some weeks ago. Production ceased when the broader space program collapsed. What remains exists only in old reserves, most of it degraded past usability by now, given the centuries involved."

"Most of it," Darrell repeated. "Not all of it."

The engineer hesitated, and Ar, translating, caught something in her tone that made him choose his next words with visible care. "There is one known reserve still viable. Properly stored, properly maintained, still within tolerance for use. It's small — I want to be honest about that. Whether it's sufficient for a full return journey depends on factors we're still calculating. But it exists."

"Where," Darrell said.

The engineer's answer, when it came, landed with a weight that settled cold and immediate into Darrell's chest.

"It's held in a secured facility under the resource allocation authority's direct oversight," she said. "Aviaosn Ze's authority, specifically. She's maintained it herself, personally, for reasons I don't believe she's ever fully explained to anyone outside her own division."

"Personally," William repeated. "Not just administratively. She's the one who actually keeps it stable."

"As I understand it, yes. It requires specific, careful maintenance to remain viable, and she's overseen that maintenance herself for as long as I've worked in this division. There's some suggestion, among the older staff, that she inherited the responsibility from her own predecessor and simply never delegated it, though I don't know the full history."

Darrell filed that detail away, understanding, even as the engineer moved on to other logistics, that it mattered — that Ava hadn't simply stumbled into control over the one thing they needed. She'd been quietly guarding it, alone, for years, long before any of them had fallen out of the sky into her life.

Darrell found Rachel's face going carefully blank in the particular way it did when she was working through implications faster than she wanted to say them aloud, and understood, watching her, that she'd already arrived at the same uncomfortable conclusion he had.

"Ava controls the fuel," he said, flat.

"Ava controls the fuel," Rachel confirmed, quiet. "The same Ava who just spent political capital fighting a council vote to keep our research resources intact. The same Ava who's been..." She trailed off, not quite finishing the sentence, though Darrell understood well enough what she'd been about to say.

"You need to talk to her," Darrell said, gentle but direct. "Today, if you can manage it. We need to understand what we're actually working with here before we start planning anything else."

Rachel nodded, though something in her posture had gone tight, bracing, and Darrell recognized, watching her leave, the particular dread of a person about to have a conversation she'd hoped, right up until this moment, she'd never have to have.

She came back that evening, drawn and quiet, and told them what Ava had said in a voice that carried more weight than the words alone seemed to justify.

"She confirmed it," Rachel said. "The reserve exists. It's viable. It's also, by her own estimate, barely sufficient for the journey — enough for the ship itself, maybe, with careful management, but she wasn't willing to promise more than that without further testing."

"And?" William asked, sensing there was more.

"And she asked for time. Not to deny us the fuel outright — she was clear about that, she said she wasn't going to simply refuse. But she asked me not to move forward with any formal request yet. Said she needed to think through the implications properly before committing the settlement's last viable reserve of an irreplaceable resource to a one-way trip that would only benefit two people."

"Two people," Darrell repeated, something cold settling in his chest. "Not three?"

Rachel's face had gone carefully composed, the same careful composure she wore when she was managing something painful rather than avoiding it. "She meant you and me, Darrell. Whoever ultimately makes the journey. I don't think she was trying to be cruel about the arithmetic. I think she was just being honest about the scale of what's actually being asked — the last of something this settlement can't replace, spent to send a handful of people somewhere that offers this civilization nothing at all in return."

Darrell sat with that a long moment, feeling the full shape of the problem settle into place. He'd understood, in the abstract, that the crew's presence here had always been a kind of exchange — knowledge and help offered in return for shelter, welcome, the chance to grieve and rebuild in a world that hadn't asked to receive four displaced strangers from its own deep past. He hadn't fully reckoned, until this moment, with what it might mean to ask that same world to spend something irreplaceable purely to let two of those strangers leave.

"She's not wrong," he said, finally, quiet. "About the arithmetic. I don't like it. But she's not wrong."

"I know," Rachel said. "That's what makes this so much harder than it would be if she were simply being obstructive for its own sake. If she just said no, flatly, I think I could be angry at that in a clean, simple way. Instead she's asking a genuinely fair question, and I don't have a genuinely fair answer to it yet."

William, who'd been quiet through most of the conversation, finally spoke, his voice carrying an edge Darrell hadn't expected from him. "What's the alternative? If she decides not to release it. What happens then?"

Nobody answered right away, and Darrell understood, in the silence, that they were all arriving at the same uncomfortable place — a window that might open regardless, a star that would collapse whether or not anyone was ready, and a ship with no fuel to meet it.

"Then we don't go," Darrell said, finally, forcing the words out plainly, because someone needed to say the actual stakes aloud rather than let them sit unspoken. "That's the alternative. If she doesn't release the fuel, or can't find a way to justify it to her own council, Rachel and I stay here. Permanently. Not because we chose it. Because the door closed on us instead."

The silence that followed carried more weight than anything said in the conversation so far. Darrell watched Rachel's face, saw something complicated cross it — not quite fear, not quite anything as simple as fear, but the specific vertigo of a person confronting, for the first time in concrete terms, the possibility that a choice she'd believed was hers to make might not actually be hers at all.

"I need to talk to her again," Rachel said, finally. "Properly. Not as a formal request. As — I don't know what to call it. As the person she's spent three months building something real with, asking her honestly what it's actually going to take for her to say yes."

"Do you think she's using this?" William asked, quiet, careful. "Not maliciously. I don't mean that. But do you think some part of her sees this fuel reserve as leverage, even if she'd never admit it to herself that way? A door that only she gets to decide whether to open?"

Rachel was quiet a long moment, clearly turning the question over honestly rather than dismissing it out of loyalty. "I don't think she's doing it on purpose," she said, finally. "I think Ava is, underneath everything, a person who has spent eleven years being told no by people with more power than her, and who has finally, for the first time in her career, found herself holding something nobody can take away from her without her consent. I don't think she's weaponizing that consciously. I think it might be the first time in a long while she's had any real control over an outcome that matters to her, and I think some part of her is finding that control very hard to let go of, even when letting go is the right thing to do."

"That's a generous read," William said.

"Maybe. I still think it's the true one."

"Be careful," Darrell said, gently. "I don't think she's trying to trap us, Rachel. I think she's genuinely torn, the same way she's been torn about everything since the day she showed you that first model. But careful people asking hard questions can still end up in a place where the answer's no, even when nobody involved wanted it to be."

"I know." Rachel's voice had gone quiet, resolved. "I'm going to go anyway. I'd rather know the real shape of this than sit here guessing at it."

She left the following morning, and Darrell spent the day in Hope 's dim, familiar cabin with the engineers, running calculations on fuel margins and propulsion tolerances that felt, increasingly, like exercises in a problem that might never actually get solved — precise, careful work toward a destination that remained, for now, entirely conditional on a decision none of them controlled.

William found him there in the late afternoon, quiet, watching him work.

"You alright?" William asked.

"Honestly? No." Darrell set down his instrument, rubbing at eyes gone tired from hours of close calculation. "I keep thinking about Mara's sentence. The one that never finished. I've spent months telling myself I need to go back and stand where she said it, finish the grief properly, the way Xavier finished his. And now I'm sitting here doing math on whether there's enough fuel to make that possible, and some small, ugly part of me is furious that it's come down to a resource allocation problem. Like grief has to justify its own cost-benefit analysis before the universe decides it's allowed to happen."

"That's not an ugly thought," William said, quiet. "That's just an honest one."

"Maybe." Darrell looked at his oldest friend, feeling the particular ache of a conversation he understood was going to become considerably harder before it got easier. "What happens to you, Will, if this doesn't work? If Ava says no, and Rachel and I are stuck here."

William was quiet a long moment, considering the question with real weight. "Then I guess we're all staying," he said, finally. "Which — I won't pretend some part of me hasn't already thought about, more than once, in the last few days. I don't want that for you, Darrell. I want you to get what you're chasing, the same way Xavier got his. But if it comes down to it, if the door just doesn't open — I don't think that's the worst possible ending either. We'd still be together. All three of us. That's not nothing."

"No," Darrell agreed, quiet. "It's not nothing." He looked back at the instrument panel, at numbers that refused, so far, to add up to anything certain. "I just don't think it's what any of us actually want, if we're being honest. Not the whole shape of it, anyway."

William didn't argue, and the two of them sat together a while longer in Hope 's dim, familiar quiet, waiting, the same way they'd waited so many times before, for someone else's decision to determine the next shape of their lives.

Rachel returned near evening, and Darrell read the answer in her face before she'd said a single word — not resolution, not yet, but the particular, careful hope of a person who'd walked into an impossible conversation and come out with something to work with, even if the work itself was far from finished.

"She hasn't said yes," Rachel reported, settling onto the bench beside them, exhausted but not defeated. "But she hasn't said no either. She's agreed to bring a formal proposal to the council herself — argue for the release directly, rather than making the decision alone or letting it die quietly through inaction. She says she needs time to build the case properly. Says a decision this size deserves more than a hallway conversation, however honest."

"How much time?" Darrell asked.

"She wasn't certain. Weeks, at least. Maybe longer." Rachel's exhaustion was plain in her voice, though something steadier ran underneath it. "I believe her, Darrell. I believe she's actually trying. I don't think that guarantees anything. But I think it's more than we had this morning."

Darrell nodded slowly, feeling the strange, unsettled shape of hope mixed with uncertainty settle into his chest — no closer to a guarantee than he'd been at dawn, but no further either, and for the moment, in a story that had cost all of them so much already, he understood that was going to have to be enough to carry forward, one more day, toward whatever came next.