The wind gusted. The feeling of pressure beneath her arms increased and at the same time she felt the entire craft rising. She moved her feet and her hands in a way that the suit recognized and transmitted to the glider’s control surfaces. Just that quickly, it was configured for lift. Biting suddenly into the wind coming up the hill, the craft sprang into the air; she could feel the knots of pressure vanish as the ground lost contact with the wings. Then the only sensations on the skin of her arms were caused by the wings reading the currents of air flowing over them. She let herself rise high enough to buy some margin of error, then dropped the nose and glided down the hill, trading altitude for velocity. The game she’d be playing for the rest of the day was to build up a fund of energy by stealing it from the atmosphere. At the end she would trade it all for altitude, and spiral up to a place where the atmosphere failed.