It was harder to get the penguin to do anything, in the constrained space of the Vegas cube, than it had been to get the ray to do those rhythmic somersaults, but he was starting, now, to manage a repeated stationary roll. If he bumped the wall, Fiona noticed, and didn’t like it, so he tried to be as careful as he could. She said that the robotics in the wings were fragile, and the penguin was helpless without them. It didn’t really fly, because penguins don’t, and it was a balloon; rather, it swam, through air instead of water, and once you had it going where you wanted it to, it knew how to swim by itself. He was careful to keep that overridden now. He wished they could take the thing out and really fly it, the way he’d seen her fly the other one in Paris, but she said that they couldn’t, because people might see it and get excited, and because Garreth had ordered her to keep him inside.