I love having a light on most of my guns. In the dark you need to identify your target. If you don't want them to see you don't turn it on. When you don't have one and need one you sing a different toon. Always identify your target. Combat and HD are also totally different environments but you still need to identify your target one way or another. It doesn't matter if it's a burglar, terrorist, enemy soldier or the four horsemen of the apocalypse. Friendly fire isn't and incoming bullets always have right of way!
The number one cause of death in the 20th century. 290,000,000 citizens were first disarmed and then murdered by their own governments. This number does not include those killed in war.
We're from the government, we're here to help