Ghost Town Gunfight

 is a quest in Fallout: New Vegas. It involves the town of Goodsprings and a powder gang led by Joe Cobb. You can either save Goodsprings and destroy the Powder Gangers, or side with the Powder Gangers and destroy Goodsprings.

Detailed walkthrough
The quest starts after Mitchell mentions an issue in the town of Goodsprings.

Tips
It is best to resolve the quest quickly, otherwise you will encounter them randomly later on in the game, and they will be much more powerful.