Cold, Cold Heart

 is a quest in Fallout: New Vegas.

Quick walkthrough
Talk to Vulpes Inculta in Nipton then walk to Sgt. Kilborn and "spread the word".

Detailed walkthrough
As you walk through the flaming town of Nipton, there are people being crucified in the center of the town. Near the town hall, 4 recuits and Vulpes Inculta are standing. Inculta will aproach you and tell you that he will let you live as long as you spread the word to the NCR of the horror they caused in Nipton. Talk to Sgt. Kilborn at the entrance to the mojave outpost and tell him. Quest complete!

NOTE: This does not have any apparent result in faction influence, straight XP reward. It also makes Vulpes and his 4 recruits vanish from Nipton