You know how much I love these post-apocalyptic snapshots, and it's that much more powerful that we don't actually know what happened, what caused it and what horrors they've seen since. It seems to me that they themselves don't know, or care to at this point. And the way the landscape and the rot and the chaos of the early days was described, almost from casual memory, shows just how detached Bob's become, that he really only has Frank to hold on to now, as much as he's probably reluctant to admit it.

“We’ll see them again. Sometime, somehow. All this can’t last forever, can it?”

;__; Somehow I get the feeling that they won't, and Bob knows--he just needs Frank to stay optimistic for both their sakes.