Caitlin sighs, "I know how you feel, but you're not thinking clearly. Take a deep breath, calm down. Throw up if you feel like it, but do not panic."
She smiles again, and pats Chip on the back gently, trying to be friendly, "There are not a billion Zombies in Sunnybright, because there were not a billion people in town when whatever happened that caused this situation. They are slow, stupid and die just like real people when you shoot them.
We need a safe place to rest, a place with only one place of entrance where our concentrated fire-power can mow down any horde between us and our vehicles. And we need a future beyond the next few days. I have no skills, no education, no other way of living the kind of life I want for myself. This is a great opportunity, this is my chance and I will take it.
As for the rest of the world, we just don't know. This might be the end of the human race, but if it is what can we do about it? Where can we hide, where can we escape to? Why worry about what we cannot affect? Why not hope for the best? And why not make the best of the situation?"
"The Vault?" she shrugs, "We'll deal with that when we get to it. But if you happened to find any explosives I'd really appreciate it."