"But what'll we do without Pop?" Jon's mind went back to his problem. "Who would be in command of their ship now? Mom didn't know a thing about the navigation of space. Look how she'd demanded he turn around 'right now'!" She was wonderful, and Jon loved her dearly. But he also knew she would be absolutely out of place trying to make their decisions about where to go, how to get there, how to run the ship, and so on. She had always seemed content to "keep house" on the ship, just as she had on Terra, and paid but little attention to what else was going on. And Jak was just about as bad. The older boy was quick-and-logical thinking, and knew a lot--but not about such things. Jon had been the one who was always tagging their father around, forever asking questions about how to do this, why was that done, what did this machine do and what was the theory behind it, and so on? He had always been working with machines, almost since he could toddle. He took them apart, not destructively but questioningly, and was very soon able to put back together again correctly an endless succession of ever-more-complicated mechanisms. Recently he had begun the study of astrogation--he had also long been a "math shark"--and now knew enough to realize how little he really did know about this complicated subject--although actually it was a great deal. Sobered, and suddenly aware of a growing maturity brought on by the terrific problems they faced, Jon sat up. He rose and went over to his mother's side. He touched her softly on the shoulder, and she looked up at him. At sight of his anxious face she threw her arms about him. "Jon, boy, what will we do now? How will we ever manage without Mr. C?" At this echo of his own questionings and doubts, the boy straightened. "We'll make out all right, Mom," he said with a bravado he certainly did not feel, but which he hoped she would think was genuine. "We'll have to make up our minds what we're going to do, then do it. We'll keep on with Pop's plans, of course." This was a statement rather than a question. "Why ... why...." She seemed startled by the realization that she had to make a decision. "I hadn't thought about that yet." She was silent a moment, then turned to her elder son, who had also risen and was listening intently. "What do you think, Jak? You're older, so you'll have to take charge now and be the man of the family." The slender, studious eighteen-year-old looked startled. "I ... I don't know," he stammered, his eyes suddenly filled with strange fears. "I ... I suppose we might as well go home. We don't know where we're going, or what we were to do when we got there...." He suddenly looked like a little boy who has lost everything and everyone in whom he had looked for and found comfort and security. "Don't ask me, Mother. I don't know what we're going to do. We're apt to die, without Father to keep us going safely!"