I was trying to meet up quick but realistically as possible.
@Sophruswhy would your plan to be get out of the city?
First off the town will probably be under some kind of quarantine for about five hours at most.
A. the infected will overwhelm the military forces and open the boundaries.
B. the military forces will be called back so they can napalm the city. In hope/fear to stop the virus<---never works.
C. The infected hear that damn car alarm and kill us all.
D. A series of A, B and C. The infected will overrun military forces just as they get their retreat orders. Thus the infected have already broken city limits and then we all get roasted.
Again these are just things my character is thinking about while he sits there with a gun in his face. My character would know of these things because of his paranoia and he could probably bounce it off the military person when he arrives.