We have a couple of larger drones (duly operator registered etc) for use on our farms.
Used mainly to locate fallen stock, or sheep that have wandered far from their hoof (their usual grazing areas). My brother-in-law used one last week to help navigate in a locum vet who got totally lost!
The local police have asked us to use them a couple of times to help locate walkers lost on the higher Pennine Way. Also, a couple of years ago, the fire brigade asked us to help them map out a large moorland blaze using the drone, but I think they have their own drones now.
So, they are quite useful tools for farmers and the emergency services etc.