We're gleaning some more interesting observations about the over-all scene, Free Republic style.
I assumed that there would be another guy on the other side in the trees as well.
The guys at the roadblock ambushed him. They were planning for him to get stuck on one of the sides. Whoever came out of that truck first was dead.
If Lavoy went for a weapon. Why would they continue firing on the truck after he was down? Because they waned to kill the people in the truck as well.
They knew they’d tried to get away because the officials had already shot at them at the first stop.