The concept of world-building is bandied about a lot in Hollywood, but few television series live up to the phrase as ambitiously and expansively as Prime Video’s “Fallout,” the lavishly produced, soaked-in-rich-detail production of the beloved video game franchise that even with its epic, post-apocalyptic scale remains deeply grounded. To expand that effective sense of place established in its debut season, Season 2 called in an established Hollywood heavy hitter from a slightly benched status to make the widening universe of “Fallout” even more real: Los Angeles itself. Related Stories “That’s one of the things unique about this place people...