Andy knew a clue when he got one. He vectored thrust every which way and skittered across the sky, staying one jink ahead of Russ’s cannon shells. But he couldn’t shake Russ, and the canyon walls were narrowing. Andy was running out of room to dodge. The only open space was the sky. Andy shunted power to aft thrust to surge ahead, pulling his nose up as he did. He sent the Montjoy up into a loop that with luck would put him behind his pursuer. His speed was high—a legacy of the burst he’d used to get the jump on Russ. He could put only so much push on the airframe to fight the inertia. For the next few seconds he might as well have been flying a missile.