>> the bullet entered the back of his head, exited out the front of his head. death was instantaneous. >> cain's parents were called to the scene. >> i couldn't understand why jeff had to be the one who was shot. maybe i'm just like there is other people, why not shoot the bad people? >> jeff was a computer programmer with no known enemies. the driver, rob chamberlain, said he had no idea why they were targeted. >> our first impression was maybe it was a drug deal gone bad, and somebody was following this young man and something had happened. >> we really pressed the issue, were you targeted for some apparent reason? were you involved in something? do you have any enemies? have you been involved in anything that would have led somebody to target you? >> not far from the site of the shooting, police found a shell casing on the side of the highway. >> the bullet probably came from another vehicle that was traveling in the same direction as our victim vehicle.