Riley: Make sure she doesn't hurt herself.
Slack: I can take care of myself, ok?
Riley: Fine. Charlie, make sure she doesn't hurt anyone else.
Charlie: What happened, Riley, did you get fucked?
Cholo: Looks like God left the phone off the hook.
Mike: They're pretending to be alive.
Riley: Isn't that what we're doing? Pretending to be alive?
'High Noon' Soldier: Stench, high noon.
Mike: It's like a bad dream.
Charlie: I have bad dreams. Hell, yes. Just look at me, you can tell I have terrible dreams.
Kaufman: We do not negotiate with terrorists.
Cholo: Still workin' for the man. Kaufman send you to kill me, huh?
Riley: Yes.
Cholo: Takes a true friend to stab you right in the front, doesn't it.
Cholo: How many times have I told you, Riley, stop banging chicks with more problems than you.
Kaufman: In a world where the dead are returning to life, the word "trouble" loses much of its meaning.
Answer: Riley feels that they have just the right to be there as the living do. Besides, those zombies survived all the missles and are coming to the city while Riley and the gang are leaving. So why waste the ammunition?
Jason Riley