They've been lucky, haven't they? For a place with the population of Manhattan, there haven't been that many zombies (god, he just called them zombies in his head) shambling about. Maybe there was an evacuation. Maybe someone's come in and shot most of them.

Or maybe the things have just been congregating. Peter sees his companion freeze, registers something's wrong even as he, too, rounds the corner --

She doesn't have to tell him twice. Or even once, really. The sound that comes out of him is more moan than scream as he turns on his heel and sprints back the way they came, not thinking to even make sure she's coming until he's already in motion.