Go in a random direction looking for survivors, M16 at hand, incase of any zombies attacking you.
It appears all but one exits are blocked.
You go down the street and turn a corner, finding yourself amongst several structures.
You have several options:
Do you go to your right and up the stairs, leading to that house?
Do you go to your left and investigate the barn (and it's adjoined building)?
Do you go straight then turn the corner to the left to search for more options?
EDIT: I forgot to mention the fourth.
Do you go straight then turn right, entering that apartment building?