"Where is Manning? Didn't he think it necessary to report to me?" Walters looked at Strong. "Well, Steve? It's your unit?"

"It seems he got off the Space Knight at Ganymede, sir," replied Strong reluctantly. "Captain Miles said the last he saw of Manning he was walking toward the deep-space section of the spaceport."

Walters' eyes suddenly became very bright and hard. "He got off, did he? Well," he snapped, "this is just about the end of the line for Cadet Roger Manning!"

"I'm sure Roger has a good explanation, sir—" began Tom.

Walters glared at the cadet. "None of that, Corbett. Manning is a bad rocket and the sooner I get rid of him the better off the Academy and the Polaris unit will be. Now take your twenty-four-hours' leave and report back here ready to work."

"Yes, sir," replied Tom. He and Astro saluted and turned to leave the office but were stopped by the sudden appearance of Sid and Kit. Sid's face was aglow. Kit was scowling.

"You know what we found on the Space Knight?" exclaimed Sid, unable to hold back.

"What?" asked Tom.

"Almost a full tank of reactant!" replied the young engineer. "And the after burners showed about as much wear as if the ship had jumped from Earth to Venus."

"What's that, young man?" snapped Walters, stepping forward quickly. "What are you talking about?"