I know he has a house in Megaton, but he doesn't go there after you disarm the bomb and let him live. Does he go to Tenpenny Tower?
He literally vanishes into thin air. This is the code which does this, comments are FO3 devs not mine
if MisterBurkeRef.getIsCurrentPackage MS11BurkeFlee == 1 if MisterBurkeRef.getInSameCell player == 0 ;he vanished like the myserious henchman he is, and is never seen again MisterBurkeRef.disable set moved to 1 endif elseif MS11Fin.BurkeCharmed != 0 if MisterBurkeRef.getInSameCell player == 0 ;he vanished like the myserious henchman he is, and is never seen again MisterBurkeRef.disable set moved to 1 endif