BRANDON O'REILY: Crap, I saw 'em - I couldn't believe it. It was a ways away, so first I though it was rats, but rats don't come that big, not even in New York. And rats don't slide manhole covers back. I called to the guys and started heading that way, but the targets scattered, just like vermin do. But that's when I had the idea - we figure out where infected are hiding down there, it'll be easy to get them cornered. Can't exactly scatter in a sewer, can ya? Whatever's down there - they're even dirtier than the ones up here. They got more than just the virus. We can't afford to ignore the threat.