Wearing tactical clothing, or putting pro-gun bumper stickers on your car, or putting a sign that says "Protected by Smith and Wesson" on your front lawn, all give away whatever element of surprise that concealed carry offers. Long ago I subscribed to the concept of the "gray man", believing it is to my advantage to be as invisible, and unthreatening as possible in my appearance while ALWAYS doing my best to be situationally aware. I don't get immersed in my phone while walking to my car in a parking lot, nor appearing to be enfeebled and thus an easy target. And I don't own a fake badge that says "Licensed Concealed Carry" or some other useless foolishness.