So I was looking something up yesterday, ended up on the Tube, and saw a 10 min. segment of the first John Wick movie, 'dinner reservation for 12'. I will admit to being a JW fan so I clicked on it and watched it. One thing I noticed that was once the assassins were in the house, John could be seen looking/watching for the lights these idiots were waving around so as to locate soon-to-be dead assassins. It was fun to watch. When the 'stick a flashlight on your pistol' craze started I asked myself why in the world would I want to telegraph my position/direction/movement to someone I'm engaged in a firefight with? I could come up with no good reason, so I never considered hanging a light on any of my weapons. But I'm curious as to why some folks do it? Honest question.