Here's an offense I didn't know existed, but apparently in North Carolina you can be charged with a crime for doing something that is otherwise legal if it scares people.
What apparently happened was that a soldier from FT Bragg went to a local mall to have glamour shots made of himself with his body armor and rifle. The result was a complete panic, the closing of the mall, the arrest of the soldier, and his being charged with this obscure crime.
The Duffel Blog mocks the soldier for his lack of self-awareness, pointing out that this was right after a reported shooting at the Navy Yard. That story turned out to be false, of course, which suggests that a kind of public hysteria is at work. I suppose one has to be aware of the hysteria of one's fellow Americans as well, though frankly, at this time that requires a tremendous amount of awareness. America is hysterical about everything just now.
In any case, while scaring others is adequate for being arrested and charged with the crime, actual conviction will require proof that his intent was to terrify people. Assuming they don't manage to bluff him into pleading guilty, our boy ought to walk on that one.