Joel gives a faint affirmative grunt. Which basically translates to yes we are agreed on that point. He keeps one eye perpetually on Ellie, as though afraid if she gets out of his sight, she'll vanish again and he'll never be able to find her.

Eventually, they will have to stop and find someplace to get some shut-eye, but until then, he has no intention of letting her get too far away.

"Lotta good places to get ambushed in a building like this," he says mildly. "Do you know if there's roof access?"