plugged credit for our chances of getting through it."

"I didn't ask you for your opinion!" snapped Vidac. "All right, you've
given me your information. Now get out!"

Sykes abruptly turned and left the lieutenant governor's compartment.
Alone, Vidac paced the floor. After a moment of deep thought he snapped
his fingers in decision and turned on the ship's intercom.

"Corbett! Manning! Astro!" he bellowed. "Report to the control deck on
the double."

A few moments later the three cadets stood before Vidac at rigid,
stone-faced attention. Vidac turned on the chart projection screen and
pointed to their position in space.

"Professor Sykes has just warned me that the fleet is approaching a
freakish asteroid cluster," he announced. "He estimates it to be of this
size." Vidac swept his arm over the chart, taking in most of the space
directly in front of their path. "To go around it, over it, or under it
would mean altering the course of the whole fleet and losing about six
days' transit time." He turned back to the cadets who had been watching
closely. "I want you three to see if you can find a route through the
belt and save us the detour time." He glanced at his wrist chronograph.
"The belt is about forty-one hours ahead of us now. Take a rocket scout,
look it over, and report back to me."

"Yes, sir," said Tom. "Anything else, sir?"

"Yes," said Vidac. He stepped closer to the three boys. "This is not a