Dusty McBride

Dusty McBride tends to his ranch of Brahmin in Novac in the Mojave Wasteland in 2281. He is the husband of Alice McBride. Dusty carries the unmarked quest Midnight Ranch Attacks. He informs the Courier about the his Brahmin being attacked at midnight every night. According to Dusty they are found with bullet holes in them. If you wait until midnight, you will see that it is a crazed Nightkin causing the attack. He appears in Fallout: New Vegas.

There's been a bug (Xbox 360) where the Nightkin doesn't attack the Brahmin and just stands the other side of the fence, watching. When you approach the Nightkin, he does nothing. You may stand as close as you want and no reaction will come from him. If you shoot him while he's still cloaked, you will be able to kill him (his dead body falls still cloaked), search him and gain XP from it but when you go back to Dusty McBride you only have the option to tell him that you haven't found anything.