"Uh-uh." Joe shook his head. He turned away, then stopped, and called back, "Want a lift back to the Tower?"

Before Tom could answer, Richards, the captain of the Arcturus unit spoke up. "How about finishing the game, Tom? It's been so long since we've had such good competition we hate to lose you. Come on. Only a few more minutes."

Tom hesitated. It had been a long time since the two units had played together, but orders were orders. He looked at Roger and Astro. "Well, what about it?"

"Sure," said Roger. "We'll wipe up these space jokers in nothing flat! Come on!"

There was a mock yell of anger from the Arcturus unit and the two teams raced back to their starting positions. In the remaining minutes of play, the cadets played hard and rough. First one team would score and then the other. A sizable crowd of cadets had gathered to watch the game and cheered lustily as the players tore up and down the field. Finally, when both teams were nearly exhausted, the game was over and the score was eight to seven in favor of the Polaris unit. Roger had made the final point after Tony Richards had left the game with a badly bruised hip. A substitute called in from the bystanders, an Earthworm cadet, had eagerly joined the Arcturus team for the last minutes of play but had been hopelessly outclassed by the teamwork of the Polaris unit.

Promising a return match soon, Roger, Tom, and Astro hurried to their lockers, showered, and dressed in their senior cadet uniforms of vivid blue, then raced to the nearest slidewalk to head toward the main group of buildings that made up Space Academy.

Whisked along on the moving belt of plastic that formed the principle method of transportation in and around the Academy grounds, Tom turned to his unit mates. "What do you think it'll be?" he asked.

"You mean the assignment?" asked Roger, answering his own question in the next breath. "I don't know. But anything to get out of here. I've been on Earth so long that I'm getting gravity-itis!"

Tom smiled. "It'll sure be nice to get up in the wide, high, and deep again," he said, glancing up at the cloudless sky.

"Say it again, spaceman," breathed Astro. "One more lesson on the differential potential between chemical-burning rocket fuels and reactant energy and I'll blast off without a spaceship!"