I see no rational way for the truck driver to justify his actions; firing at another vehicle, through your own windshield, while driving 90+ mph is unbelievably reckless. Not to mention that the car was in front of him with its driver presumably facing forward; how do you articulate a valid threat in that situation? If he was truly in fear for his life, all he had to do was let off the gas. And before anyone says the driver of the truck had no duty to retreat, remember, SYG only applies if you're in a place you have a legal right to be...and you have no RIGHT to travel 20+ mph over the posted speed limit on a public highway. Having said all that, I have my doubts that either driver will be charged. I suspect that the State Attorney will decide there is not enough evidence to convict either driver. The driver of the car will undoubtedly claim that he was in fear of his life and brandished his pistol only because the driver of the truck pursued him.