Kath Two got to the airlock with time to spare. Its floor was padded as a courtesy to people who, like her, were experiencing it through all the body’s boniest parts. She rolled heavily onto her back, slightly bumping the pilot who had reached it on hands and knees, and connected her air tube to a socket on the airlock wall. New air flooded her helmet. The Teklan entered and allowed himself to collapse onto a bench. The outer hatch closed and locked. The air pressure rose and the nat mesh reduced its fierce clutch on her body. It became no tighter than an athletic jersey as the pressure approached one standard habitat atmosphere—a thinnish concoction of gases similar to what humans of Old Earth had breathed in places like Aspen, Colorado.