Matt thought about it, fiercely. He remembered Commander Rivera-one of the Four, of the proud Tradition-how Rivera, sent down to reason with the official in his own capital, his very native city, had kept the trust. Suspecting that he might be held as hostage, he had left orders to go ahead with the attack unless he returned in person to cancel the orders. Rivera, whose body was decaying radioactive dust but whose name was mustered whenever a unit of the Patrol called the roll.

His father was still talking. "Of course, the Patrol has to patrol this continent just as it patrols all through the

System. It would look bad, otherwise this is no reason to frighten women with an impossibility."

"I'd rather not talk about it, Dad."

Matt glanced at his watch and figured how long it would be until the New Moon reached Terra Station. He wished he could sleep, like the others. He was sure now what it was that had changed his mind about resigning and remaining in Des Moines. It was not a desire to emulate Rivera. No, it was an accumulation of things-all of them adding up to just one idea, that little Mattie didn't live there any more!

For the first few weeks after leave, Matt was too busy to fret. He .had to get back into the treadmill, with more studying to do and less time to do it in. He was on the watch list for cadet officer of the watch now, and had more laboratory periods in electronics and nucleonics as well. Besides this he shared with other oldsters the responsibility for bringing up the youngster cadets. Before; leave his evenings had usually been free for study, now he coached youngsters in astrogation three nights a week.

He was beginning to think that he would have to give up space polo, when he found himself elected captain of the Hog Alley team. Then he was busier than ever. He hardly thought about abstract problems until his next session; with Lieutenant Wong. j

"Good afternoon," his coach greeted him. "How's your class in astrogation?" 1

"Oh, that - It seems funny to be teaching it instead of flunking it." ;

"That's why you're stuck with it-you still remember what it was that used to stump you and why. How about atomics?"