short the winndo tho soon as it says hes comeing back !! hit lb then pot short the windo

Grab any sort of automatic. When it drives over your trench the first time you should be crouched. At the moment it passes jump out of the trench. You should see it going up toward the road. At that moment one man from the two on the back of truck should fall off and die. Run up to the truck while it's attempting to turn around. Shoot at the driver seat with everything in your gun. after the glass breaks it should be easy to pick him off before he can make another driving pass at the trench where jenny is. I was able to kill him up on the road like I described. It's all a matter of aiming.