You were calmly in your home watching TV when suddenly the an EAS alarm activated and said "Warning, this is not a drill, this city is now under quarantine due to an infection, do not leave the homes, this is not a drill."

You suddenly got a zombie entering your home, you got out and locked the zombie, then you left the home and began to run, chaos is unfolding all over the place, zombies eating people, citizens running, you suddenly reach a military checkpoint, they seem to be holding barely against a massive wave, a girl that seems to be a NCO and is extremely stressed while shooting her M4 Assault Rifle

How many more are there?!!?!?

She gets the radio Hey we're about to get overrun! We need to evac! The radio replies: "Negative, keep holding the line, we need to keep the city in quarantine"

Fuck! She throws the radio and keeps shooting desperately, you know that she's gonna get overrun pretty soon