"My father is trying to build a purifier big enough to provide safe drinking water for the entire Capital Wasteland," Ellen says. "It's been a dream of his since before I was born, but he had to give it up after my mother died so that he could raise me in safety. Now that we're both living on the surface instead of in Vault 101, he's back at work on the project, and I'm going to do what I can to make sure the premises are properly guarded."