The three cadets nodded respectfully. They knew all about the governor's achievements in establishing the first colony on Ganymede, and his success with the first exploratory expedition to outer space.

"Sit down, boys," said Walters, indicating a near-by couch. "Governor Hardy will explain things from here on in. Where is Captain Strong?"

"He said he'd be along in a few moments, sir," replied Roger.

"Well," said Walters, turning to Hardy, "no sense in beginning without Steve. Only have to repeat yourself." He turned to Astro but not before he saw a grimace of annoyance cloud the governor's face. "How are you making out with your classroom studies, Astro?"

"Uh—ah—" stammered the giant Venusian, "I'm doing all right, sir," he managed finally.

Walters suppressed a smile and turned to Hardy.

"One of the most important aspects of our training methods here at the Academy, Governor," began Walters, returning to his desk, "is for the cadet to learn to depend on his unit mates. Take Astro, for instance."

The two men glanced at the big cadet who shuffled his feet in embarrassment at being the center of attention.

"Astro," continued Walters, "is rather shaky in the field of theory and abstract-scientific concepts. Yet he is capable of handling practically any situation on the power deck of a spaceship. He literally thinks with his hands."

"Most commendable," commented Hardy dryly. "But I should think it would be difficult if he ever came face to face with a situation where his hands were bound." There was the lightest touch of sarcasm in his voice.