Hunter walked into the emergency stairwell, the only stairwell he hasn't barricaded that still leads to the ground floor, the rest he sealed as soon as he could. Had a great idea to secure the building, that ended in about 12 shotgun shells, then about 8 more, then a grown man crying behind a closed door. So that plan ended. He walked to the bottom of the stairwell, it was repetitively clear, the infected seemed to not enter into it much. 

When he got to the ground floor he looked into the parking lot, He saw his truck only a few spaces down from the exit. Though in that few spaces was at least 3 infected, then maybe 4 more the other way, and at least 20-30 in the immediate parking lot.

He gained the guts to open the door, He pushed into it with all his might, then it didn't open. *This is an emergency door?! WHY WONT IT OPEN?!* He thought. Then he looked under the door window, a corpse lay leaning against the door, a big one at that. "Well crap... Now I need a plan B."