Monroe piles on by telling Miles he looks tired, then asks if leaving the militia -- and trying to kill his best friend -- was worth it. Well, I bet those nice years he had in that bar in Chicago were all right. He had a pretty good setup there until Charlie ruined everything. Monroe asks why he did it, and Miles says there was just so much killing. Monroe tells Miles he regrets leaving, and he wants to come back. Miles denies it, but Monroe points out that he's a figment of Miles's subconscious right now. He knows what's up, and knows Miles just might go back to Monroe's side if he asks. Because he's scared.
Charlie snaps Miles out of his horrible little daydream, and he says he wasn't hallucinating, but she says he was talking out loud to Monroe. She tells him he can't fall apart, because if he does they'll all die in the tunnel. She apologizes, which I think is a first, telling him she knows he didn't ask to be in charge, but that they need him. "So pull it together," she says. Big talk, Charlie.
Aaron, of course, is stumbling and huffing and puffing, because his wife is walking next to him, softly calling his name and asking why he won't talk to her. She asks why he left her, and starts reading off a roll call of Things Aaron Hates About Himself: he's weak, he's cowardly, he couldn't protect his wife. "Maybe you never really loved me," she says, and Aaron says out loud, "That's not true," which gets Nora's attention. He says it's nothing. Behind him, his wife yells his name. It's a shame she never got a name.
Wheatley points out that the torch is burning stronger, which means it must be getting more oxygen. He points out a door riddled with holes, then goes to investigate. Oh, Wheatley, you are not long for this world, I don't think. He and Miles break through the door. Miles stumbles outside into the light. Behind them, the red-shirt boy who never got a name gratefully exclaims, "We're getting out of here!" Wheatley replies, "Some of us are," and shoots the red shirt in the chest. The others dive out of the way, and Wheatley slams the door on them.