"It still turns one little corner of my universe upside down."

"Petra, this was a trade."

"Was it?"

"Explain why you weren't a judas back in Battle School."

"I was a judas," said Petra. "How's that for an explanation?"

Bean was sickened. "You can say it like that? Without shame?"

"Are you stupid?" asked Petra. "I was doing the same thing you were doing, trying to save Ender's life. I knew Ender had trained for combat, and those thugs hadn't. I was also trained. Bonzo had been working these guys up into a frenzy, but the fact is, they didn't like Bonzo very much, he had just pissed them off at Ender. So if they got in a few licks against Ender, right there in the corridor where Dragon Army and other soldiers would get into it right away, where Ender would have me beside him in a limited space so only a few of them could come at us at once – I figured that Ender would get bruised, get a bloody nose, but he'd come out of it OK. And all those walking scabies would be satisfied. Bonzo's ranting would be old news. Bonzo would be alone again. Ender would be safe from anything worse."

"You were gambling a lot on your fighting ability."

"And Ender's. We were both damn good then, and in excellent shape. And you know what? I think Ender understood what I was doing, and the only reason he didn't go along with it was you."

"Me?"

"He saw you plunging right into the middle of everything. You'd get your head beaten in, that was obvious. So he had to avoid the violence then. Which means that because of you, he got set up the next day when it really was dangerous, when Ender was completely alone with no one for backup."

"So why didn't you explain this before?"

"Because you were the only one besides Ender who knew I was setting him up, and I didn't really care what you thought then, and I'm not that concerned about it now."

"It was a stupid plan," said Bean.

"It was better than yours," said Petra.

"Well, I guess when you look at how it all turned out, we'll never know how stupid your plan was. But we sure know that mine was shot to hell."

Petra flashed him a brief, insincere grin. "Now, do you trust me again? Can we go back to the intimate friendship we've shared for so long?"

"You know something, Petra? All that hostility is wasted on me. In fact, it's bad aim on your part to even try it. Because I'm the best friend you've got here."

"Oh really?"

"Yes, really. Because I'm the only one of these boys who ever chose to have a girl as his commander."

She paused a moment, staring at him blankly before saying, "I got over the fact that I'm a girl a long time ago."

"But they didn't. And you know they didn't. You know that it bothers them all the time, that you're not really one of the guys. They're your friends, sure, at least Dink is, but they all like you. At the same time, there were what, a dozen girls in the whole school? And except for you, none of them were really topflight soldiers. They didn't take you seriously,"

"Ender did," said Petra.

"And I do," said Bean. "The others all know what happened in the corridor, you know. It's not like it was a secret. But you know why they haven't had this conversation with you?"

"Why?"

"Because they all figured you were an idiot and didn't realize how close you came to getting Ender pounded into the deck. I'm the only one who had enough respect for you to realize that you would never make such a stupid mistake by accident."

"I'm supposed to be flattered?"

"You're supposed to stop treating me like the enemy. You're almost as much of an outsider in this group as I am. And when it comes down to actual combat, you need someone who'll take you as seriously as you take yourself."

"Do me no favors."

"I'm leaving now."

"About time."

"And when you think about this more and you realize I'm right, you don't have to apologize. You cried for Poke, and that makes us friends. You can trust me, and I can trust you, and that's all."

She was starting some retort as he left, but he didn't stick around long enough to hear what it was. Petra was just that way – she had to act tough. Bean didn't mind. He knew they'd said the things they needed to say.

Command School was at FleetCom, and the location of FleetCom was a closely guarded secret. The only way you ever found out where it was was to be assigned there, and very few people who had been there ever came back to Earth.

Just before arrival, the kids were briefed. FleetCom was in the wandering asteroid Eros. And as they approached, they realized that it really was in the asteroid. Almost nothing showed on the surface except the docking station. They boarded the shuttlebug, which reminded them of schoolbuses, and took the five-minute ride down to the surface. There the shuttlebug slid inside what looked like a cave, A snakelike tube reached out to the bug and enclosed it completely. They got out of the shuttlebug into near-zero gravity, and a strong air current sucked them like a vacuum cleaner up into the bowels of Eros.

Bean knew at once that this place was not shaped by human hands. The tunnels were all too low – and even then, the ceilings had obviously been raised after the initial construction, since the lower walls were smooth and only the top half-meter showed tool marks. The Buggers made this, probably when they were mounting the Second Invasion. What was once their forward base was now the center of the International Fleet. Bean tried to imagine the battle required to take this place. The Buggers scuttering along the tunnels, the infantry coming in with low-power explosives to burn them out. Flashes of light. And then cleanup, dragging the Formic bodies out of the tunnels and bit by bit converting it into a human space.

This is how we got our secret technologies, thought Bean. The Buggers had gravity-generating machines. We learned how they worked and built our own, installing them in the Battle School and wherever else they were needed. But the I.F. never announced the fact, because it would have frightened people to realize how advanced their technology was.

What else did we learn from them?

Bean noticed how even the children hunched a little to walk through the tunnels. The headroom was at least two meters, and not one of the kids was nearly that tall, but the proportions were all wrong for human comfort, so the roof of the tunnels seemed oppressively low, ready to collapse. It must have been even worse when we first arrived, before the roofs were raised.

Ender would thrive here. He'd hate it, of course, because he was human. But he'd also use the place to help him get inside the minds of the Buggers who built it. Not that you could ever really understand an alien mind. But this place gave you a decent chance to try.

The boys were bunked up in two rooms; Petra had a smaller room to herself. It was even more bare here than Battle School, and they could never escape the coldness of the stone around them. On Earth, stone had always seemed solid. But in space, it seemed downright porous. There were bubble holes all through the stone, and Bean couldn't help feeling that air was leaking out all the time. Air leaking out, and cold leaking in, and perhaps something else, the larvae of the Buggers chewing like earthworms through the solid stone, crawling out of the bubble holes at night when the room was dark, crawling over their foreheads and reading their minds and ...

He woke up, breathing heavily, his hand clutching his forehead. He hardly dared to move his hand. Had something been crawling on him?

His hand was empty.

He wanted to go back to sleep, but it was too close to reveille for him to hope for that. He lay there thinking. The nightmare was absurd – there could not possibly be any Buggers alive here. But something made him afraid. Something was bothering him, and he wasn't sure what.