I work security for an apartment complex that consists mostly of several blocks of dimly lit, mostly abandoned tenement housing. The area is widely known for its poverty and high crime rate, and a common problem we are having is with thieves who break into the abandoned apartments to steal the copper piping out of the walls to recycle for cash at the local salvage yards. One night I saw a couple of guys in one of the abandoned sections of the property. I approached them as quietly as I could and then pulled out my E2D LED Defender® and shined 120 lumens worth of scrutiny onto the situation. The two men were quickly blinded and startled. I don't know what they were there for, but they didn't hang around to clarify their presence they both jumped into a nearby pick-up truck and sped away.
See the E2DL flashlight: