I was thinking about making a JFK person in FNV. . And keep guns at a very minimal.
You are aware that John Fitzgerald Kennedy was an officer in the US Navy? He was a PT boat Captain, and, as such, learned how to fire all manor of small arms up to and including M1919 .30 Brownings, M2 .50 Brownings and Oerlikon FF 20mm cannon and possibly the M3 37mm anti-tank gun they mounted on the bow the day before the
Amagiri clove his boat so famously in two. You would be well justified in giving Mr Kennedy some modest ability with firearms. Not too much now, though, as he was only Navy and not a Marine after all.
PS: I say go for it. Historyically speaking, he even fits the timeline very well. Remember to have him try to bed Vera. That would be his style.
-gunny out.