Definitely chargeable. In Ohio, he would've been charged with Aggravated Menacing, a 1st degree misdemeanor.
As to no one else seeing it, you can't blink in most of these stores without being on camera.
TFL Members are ambassadors to the world for firearm owners. What kind of ambassador does your post make you?
I train in earnest, to do the things that I pray in earnest, I'll never have to do.