Book excerpt: There was a time not so long ago when a surfboard in the sky was the stuff of comic book fantasy. Today, extreme athletes are surfing the air with ease and grace. The sports of sky surfing and its parent, skydiving, are the subject of our new high-velocity title, Extreme Sky Ports. Kids will get their hair blown back by brilliant aerial photos of sky surfers and divers in action, as clear concise text explains the history and techniques of these young, thrilling sports. Deploy! Gallery of expert sky-surf tricks; Stars and legends of the sport; The designs and function of the equipment; How this daring sport keeps safety its first priority.