The Walking Dead

You are awakened by your radio alarm clock."How do we stop these things?"
"A hard impact to the head."
"Are they dead or allive?"
"We don't know!"
You think it's just a movie,but it is actully a news flash!
You start to put on your suit ready for work.When you are half way through you hear bangs,moans and screams at the door.Thinking it is teenagers playing an early morning prank you...