He had a wife who was still sort of his responsibility, and when it came to his son there was no sort-of at all. Even thinking of Johnny was dangerous. Every time his mind turned to the boy, Clay felt a panic-rat inside his mind, ready to burst free of the flimsy cage that held it and start gnawing anything it could get at with its sharp little teeth. If he could make sure Johnny and Sharon were okay, he could keep the rat in its cage and plan what to do next. But if he did something stupid, he wouldn't be able to help anyone. In fact, he would make things worse for the people here.

The Pulse, ch. 12 - Cell (2006)