If the first four episodes of sometimes felt meandering, indulgent, lost in the Wasteland's desert, then the showdown between House and Coop in the fifth episode, "The Wrangler," comes as a thrilling course correction. The fantastically acted duel between Walton Goggins and Justin Theroux rearranges Fallout's chessboard and makes it feel like the series is finally pushing itself in a new direction regarding what we do, or don't, know about how the U.S. stumbled into a nuclear holocaust.