Pick a tactical light and a firearm.
I know there is a question of whether or not you turn on a flashlight or not. That's a tactical question and depends on a lot of factors. But if it's dark i want to have a light with me so I have an option.
In this scenario I'm talking about being inside my house. I'd also be curious about outdoors too if anybody wants to offer an opinion.
I don't have a real tactical light and don't know much about 'em.