Chia looked up from the seatback screen, where she'd been working her way through the eleventh level of a lobotomized airline version of Skull Wars. The blond was looking straight ahead, not at Chia. Her screen was down so that she could use the back of it for a tray, and she'd finished another glass of the iced tomato juice she kept paying the flight attendant to bring her. They came, for some reason, with squared-off pieces of celery stuck up in them, like a straw or stir-stick, but the blond didn't seem to want these. She'd stacked five of them in a square on the tray, the way a kid might build the walls of a little house, or a corral for toy animals.