"I thought all cargo was aboard, Jonner," said T'an. "It is," said Jonner, laying the mike aside. "That G-boat isn't hauling cargo. It's going with us. I'm not taking any chances on Marscorp refusing to ferry our cargo back and forth at Mars." "Is plotted, Jonner," boomed Qoqol, turning his head to peer at them with huge eyes through the spidery tangle of his thin, double-jointed arms and legs. He reached an eight-foot arm across the deck and handed Jonner his figures. Jonner gave them to T'an. "Figure out power for that one, T'an," ordered Jonner, and took his seat in the cushioned control chair. T'an pulled a slide rule from his tunic pocket, but his black almond eyes rested quizzically on Jonner. "It's four hours before blastoff," he reminded. "I've cleared power for this with Space Control," replied Jonner. "That planet-loving G-boat jockey missed orbit. We'll have to swing out a little and go to him." On a conventional space craft, the order for acceleration would have sent the engineer to the engine deck to watch his gauges and report by intercom. But the _Radiant Hope_'s "engine deck" was the atomic tug two miles ahead, which T'an, in heavy armor, would enter only in emergencies. He calculated for a moment, then called softly to Jonner: "Pile One, in ten." "In ten," confirmed Jonner, pulling a lever on the calibrated gauge of the radio control. "Pile Two, in fifteen." "In fifteen." "Check. I'll have the length of burst figured for you in a jiffy." A faint glow appeared around the atomic tug far ahead, and there was the faintest shiver in the ship. But after a moment, Qoqol said in a puzzled tone: "No Gs, Jonner. Engine not work?" "Sure, she's working," said Jonner with a grin. "You'll never get any more G than we've got now, Qoqol, all the way to Mars. Our maximum acceleration will be 1/3,000th-G." "One three-thousandth?" exclaimed T'an, shaken out of his Oriental calm. "Jonner, the _Marsward_ will blast away at one or two Gs. How do you expect to beat that at 1/3,000th?" "Because they have to cut off and coast most of the way in an elliptic orbit, like any other rocket," answered Jonner calmly. "We drive straight across the system, under power all the time. We accelerate half way, decelerate the other half." "But 1/3,000th!" "You'll be surprised at what constant power can do. I know Baat, and I know the trick he's going to use. It's obvious from the blastoff time they arranged. He's going to tack off the Moon and use his power right to cut 20 days off that regular 237-day schedule. But this tug-boat will make it in 154 days!" They took aboard the 200-ton landing boat. By the time they got it secured, the radio already was sounding warnings for blastoff.