The Tactical School routine is not as much fun as the playful childhood of Battle School, but it's got work enough for her once Aegis has loaded up on electives in not just personal combat but also xenobiology and engineering. She keeps busy. The months go by. She's twelve and a half and Sue's approaching fourteen. And he's been terribly moody.

"You've been a pill lately," she says, when she's between xenobio protein flashcards winking by in spaced repetition on her desk. She throws a rolled pair of socks at his back. "You okay? Has puberty eaten your personality, am I next?"