You're in Philadelphia, you're in your apartment, on floor 8. And you hear the radio. Radio: "A disease is spreading all of sudden, the infected people are dangerous and fast, they're very strong, they'll bite you. if you see them. Don't make noise and run hide. Stay in your home, and lock the entrances. We're gonna give you more news soon. God bless you." There's an explosion outside, you look though your window and you see cars crashing, people running, and escaping from something