At the far end of the field a powerful Class I Ranger, one of the Jupiter Equilateral scout fleet, was settling down into its slot in a perfect landing maneuver. The triangle-and-J-insignia gleamed brightly on her dark hull. She was a rich, luxurious-looking ship. Many miners on Mars could remember when Jupiter Equilateral had been nothing more than a tiny mining company working claims in the remote "equilateral" cluster of asteroids far out in Jupiter's orbit. Gradually the company had grown and flourished, accumulating wealth and power as it grew, leaving behind it a thousand half-confirmed stories of cheating, piracy, murder and theft. Other small mining outfits had fallen by the wayside until now over two-thirds of all asteroid mining claims were held by Jupiter Equilateral, and the small independent miners were forced more and more to take what was left. They reached the gate to the Dutchman's launching slot and entered. Inside the ship Tom and Johnny strapped down while Greg made his final check-down on the engines, gyros and wiring. The cabin was a tiny vault, with none of the spacious "living room" of the orbit-ships. Tom leaned back in the accelleration cot, and listened to the count-down signals that came at one minute intervals now. In the earphones he could hear the sporadic chatter between Greg and the control tower. No hint that this was anything but a routine blastoff.... But there was trouble ahead, Tom was certain of that. Everybody on Mars was aware that Roger Hunter's sons were heading out to the Belt to pick up where he had left off. Greg had secured a leave of absence from Project Star-Jump ... unhappily granted, even though his part in their program had already been disrupted. Even they had heard the rumors that were adrift.... And if there was trouble now, they were on their own. The Asteroid Belt was a wilderness, untracked and unexplored, and except for an almost insignificant fraction, completely unknown. If there was trouble out there, there would be no one to help. Somewhere below the engines roared, and Tom felt the weight on his chest, sudden and breath-taking. They were on their way. 4. "Between Mars and Jupiter...." After all the tension of preparing for it, the trip out seemed interminable. They were all impatient to reach their destination. During blastoff and accelleration they had watched Mars dwindle to a tiny red dot; then time seemed to stop altogether, and there was nothing to do but wait. For the first eight hours of free fall, after the engines had cut out, Tom was violently ill. He fought it desperately, gulping the pills Johnny offered and trying to keep them down. Gradually the waves of nausea subsided, but it was a full twenty-four hours before Tom felt like stirring from his cot to take up the shipboard routine.