Know how I know the Gunny has the worlds best job with Lock N Load?

It's because of the look of sheer, excited anticipation on his face before he fires each weapon and the look of sheer satisfaction on his face after he fires each weapon. Like a kid on Christmas. He is a man who truly loves what he does and is paid to do it although with a job as cool as this I'm sure he'd do it for free. I know I would. If we could all be as lucky as Gunny....