"I can see what the Fleet Commander meant when he said that he was giving me 'a most unpleasant assignment.' Hell, I don't think the Machine is able to give a judgment of 'not guilty'." Colonel Montgomery gazed toward the city they were approaching. "We've got to turn you in. We can't risk a blowup with the Martian Grand Council. There are rumors that ..." the colonel glanced again with suspicion at the back of Rhinklav'n's hairy neck, as though suspecting that the Martian might be able to puzzle out the meaning of their conversation, though it was in English. "There are rumors that the -artiansMay have an agent among the -ussiansRay. We can't risk having the borsch-eaters more popular out here than the Western Powers." The jeep bounded up the last of the terraces and through an opening in the city wall. The adobe buildings raced past, and with a final bound the jeep came to the edge of the huge, circular bowl which held the Machine.

"There's your judge," Colonel Montgomery said, speaking in Esperanto again. "I haven't much hope to offer you. For one thing, you're the first humans ever to be judged by the Machine."

The men picked up their helmets and air-pumps and adjusted them on their shoulders. Rhinklav'n drew his furry nostril-flaps down into place against the sudden change in pressure. The plastic top of the jeep flew back on its springs and the men climbed out, stretching their cramped muscles. The radiophones in the helmets buzzed, and the colonel gave Captain Barnaby a last word. "I want to impress you with the fact that the Service cannot protect you, from this moment onward. If you escape being killed it must be on your own merits. And don't start shooting Marties—won't do you a bit of good. There's a lot at stake for Earth here. Good luck, men!" Colonel Montgomery saluted, and he and his sergeant jumped back in the jeep, slammed the top down, and whirled away.

Rhinklav'n turned to the two EXTS officers. "Gentlemen, I've assigned you quarters here, near the Machine. Will you follow me?" Kim and Barnaby followed the Martian a short distance from the edge of the amphitheater to a lone adobe building, one story high and about ten meters square. "Here are your quarters, where you'll stay tonight. Your judging is set for tomorrow morning."

Captain Barnaby glanced into the building and was surprised to see that it closed with an airlock, had terrestrial canned foods on neat shelves, and had regular Service cots in place of the rough mal-leather mats that the Martians slept on. "It was good of you to go to all this trouble just for myself and Lieutenant Kim, Rhinklav'n," the Captain said.

The Martian paused at the door. "It's not just for you, Captain. Five other terrestrials have committed crimes of various proportions within the last few weeks. They will also be tried here, after your case is disposed of." Rhinklav'n left, considerately closing the airlock door and starting the pump on his way out.

Lieutenant Kim took a can of "B" ration beans down from the shelf and thoughtfully began to open it with his Service knife. "Captain," he said, "this sort of thing could drive our Service from Mars. If the Marties consider it their right to judge every Earthling who runs a jeep into a farmer's mal or lands half a meter too near one of their cities, we won't have a man on the planet in a couple of years."

"Kim, we're precedents."

"What do you mean, Yankee?"

"If the Marties succeed in convicting us of murder in some unheard-of degree by using that overgrown Erector Set of theirs, we'll be only the first two of a long string of EXTServicemen to be executed under Mars law. We can't let them do it." Captain Barnaby paused a moment to pour himself out a plateful of beans. "Kim, what was that process you used to rely on back in EXTS Academy in Denver? The one that gave you the right answers after you found that your first solutions to our astrogation problems were a few hundred thousand kilometers off?"