I have answered a knock at my door in rural Georgia in the wee-wee hours on several occasions with a revolver in my hand, down by my leg, my body between me and the door. No need for the door-knocker to know I was armed unless I needed to let him know, and no need to give him the opportunity to rush me and grab my gun arm.
There is a world of difference of what one can do in a private residence vs a public place. Entirely different statutes apply for different settings.
For all you naysayers, I never said the OP should be arrested, only questioned his drawing a gun because
someone asked for a cigarette. The perception of threat is what a "reasonable man" perceives; not you, not me, not the OP, but the those twelve "reasonable persons" that may be on a jury.
The point is not whether he was seen doing so, the no harm/no foul is irrelevent. Whether he "needed" to draw is a question that cannot be answered. His perception, base on his experience and training, compelled him to react as though he were still on the force, still making warrrant arests, etc.
What he felt was proper, what he may or may not have done while on the force, may very well put the common citizen who does the same thing in jail for aggravated assault.
I'm glad things worked out well for the OP. It may have worked out just as well with a holstered firearm--
or no firearm at all, but that is not the basis of my original post.