Education is not the filling of a pail, but the lighting of a fire. --W.B. Yeats
The use of tasers, rubber bullets and various gases and sprays have all been, and are all being, studied to find out how much damage, both short term and long term, they do. Some of the newest and most promising devices are being developed using an existing flashlight feature - strobing LED light.
When it comes to a common household flashlight changing the intensity of the light is not something you really want. This feature will cost you much more money but will provide you with the light power of many flashlights in one. A number of different intensity levels will be available with the most effective tactical flashlight.Mersen Fuses