It's weird that I recognize it as New Vegas, but I can't actually remember who the fuck the characters are. I only ever played through the DLC set in Utah once.
Shame that the great writing in that one is behind some of the lamest quests and zones the game had. I expect that's why I could recall it was NV but not any specifics; I've never wanted to play through that DLC more than the first time because it's just not that fun compared to the rest of the game or dlcs even if I did love the story.