I'm using a few of them, but I've been out of the military since long before marketing people started giving the "tactical" designation to everything. I think this is a pretty shrewd appeal to people who play a lot of Splinter Cell and can envision themselves having a sudden need for a tactical lint brush while suspended upside-down from a tactical wire rope at 3am in a foreign embassy.

The only tactics I'm aware of that apply to these flashlights are:
1. lighting things up (standard mode,)
2. getting attention (the flashy mode.)

I suppose bashing the enemy's skull in is a tactic, but you can do that with lots of other tactical things...