A dramatic video has just been released by police in Albuquerque, New Mexico.
In the video, police are heard screaming “Drop the gun! Drop the gun now!”
43-year-old Chris Williams put his hands in the air and the officers separate the men.
Police say the argument started over, of all things, an anti-Obama bumper sticker that was on Williams' truck.
One man can be heard in the video asking, "Why would a vet, or an American citizen want to put that stuff on their truck?"
The argument escalated quickly and when the police arrived they found one man on his knees, and Williams allegedly holding a gun to the back of the man's head. Police arrived just in time, possibly saving that veteran's life.