The OP worte:fallout mike said:...from my take of your post you DID NOT show your gun, correct?
Trunk Monkey said:...cleared my cover garment, put my hand on my gun but didn't draw and asked him "Is everything OK?" The guy looked at me and mumbled something...
If you are you displaying your gun to intimidate someone, to assure that someone keeps his distance or leaves, to secure his compliance, etc., your display could well be seen as a threat.
The usual definition of assault, based on the Common Law, is:
an intentional act by one person that creates an apprehension in another of an imminent harmful or offensive contact.
In the laws of some States this crime might be given another name. For example, in Alabama it's called "menacing." But by whatever name it is called, it is a crime in every State.
So a display of a firearm or telling someone you have a gun, when done for the purposes of intimidation, is, in all States, an assault of some type. You are effectively putting someone in fear of an imminent harmful or offensive contact, i. e., getting shot.