How many people commenting on this thread have a tacticool HD gun with a light on it? What is the point of the light on the gun if you are going to shoot at a shadow without IDing the target?
I have never been in the situation and hope never to be. If I am, I would hope that my eye is on the target, finger on the trigger, when I can light him up. If there is a split second when I can see a weapon or otherwise feel threatened then bang. If not, maybe a kid like this who made a mistake can stick around for a while.
That said, I don't question the homeowners action.