Fallout 3/Broken Steel

Broken Steel is the third add-on released for Fallout 3. It extends the main storyline, beginning two weeks after the Project Purity incident. After installation, you will wake up two weeks after the incident at Project Purity to find that you were successful in activating the purifier. If you infected the water with the Forced Evolutionary Virus, Project Purity will be producing harmful water. If you didn't, the water in the Tidal Basin will be fresh and clean of radiation. Elder Lyons will tell you that they have been fighting the last of the Enclave forces, and that they could use your help. He will tell you to go to the car garage far to the southwest of the wasteland.