I've now used this light in 2 burn day classes, and several times in search/rescue classes in machine-produced fog, and it works great. It's withstood the heat from burn days. I love that it takes "regular" batteries and not specialty ones. I also like that it can easily be adjusted to put light where you want it, and not just straight ahead where you are looking. The ON/OFF button can be difficult sometimes, particularly when wearing structure gloves, due to its small size and location on the butt of the light. I like the location, just wish it was larger or protruded more.