I think there are a lot of fundamentals that transfer over. I took my breathing control and bone-on-bone support from high-power shooting and use in photography.
I think the ability to move in relation to a subject to get the right perspective and cropping would come in handy for a sniper getting into the best position for a shot.
I think the must under-rated photographer here is Travis Haley. He borrowed my camera during classes and he definitely has skills, especially when it comes to getting interesting framing. USMC03 definitely has an eye for dramatic shots. I just use my flinch to capture action shots 
I also played out as a local musician and did so much that it wasn’t uncommon to go make as much on the weekend as I did at my fulltime job. I enjoyed backpacking, and thus I spent perhaps 2000 hours in the wilderness over the course of 3 years doing rock climbing, backpacking, dayhiking, hunting, and that also led to some photography. The point I discovered I enjoyed firearms I started trying to find information on them by this wonderful thing we call Google. And of course, Stick’s ability to show off :sarcastic: made me a black rifle enthusiast. Was I photographer before firearms? Perhaps. I had a camera and a few shots that really made people smile in my “vault” but nothing what I would call extraordinary. And since the internet isn’t slowing down from the expanse of photography, why not more?