I pull the pistol and announce that I am armed and suggested that he not move. The pistol has crimson grips and an under the barrel tac light.
For those that are worried about verbal warning giving away your position and letting him shoot you...
How slow are you at pulling the trigger?
I say nail him with the tac light, as you yell the warning. If he makes anything even slightly resembling a move for a weapon, I'm pulling the trigger.
Last thing I want to ever do is kill somebody. How many burglars do you think are fast enough to "Beat the Drop"