I'm surprised that drones aren't used by more tactical units. From filming looters, monitoring crowds, dropping tear gas to groups of rioters (a la Amazon delivery), satchel charges or grenades to enemy emplacements, etc. Maybe they already are, and that info hasn't reached my backwoods lair yet.
I watched a Ted talk about miniature drones that have a small charge that detonates when it impacts the targets head, swarms can be dropped from aircraft over a city, using fascial recognition they hunt and destroy all (terrorist) this is cool and terrifying at the same time.