Do you mean originally, or in that particular instance?

[ A distinction without meaning, really, but the idea of someone (at least someone who hasn't spent their entire life up to now in a Vault) not thinking of radioactive precipitation as the bog standard is still novel to him.

Arcade makes his way in the other direction - spying a half-collapsed space that might've been storage or perhaps a bathroom: the most likely of places to find medical supplies, in his experience. ]

Either way, I guess the answer is technically 'a whole lot of nuclear bombs.'