This footage is incredible!
Drones are everywhere these days. Sneaking drugs into jails, advertising clothes by dangling mannequins off them, shooting people with fireworks or chopping fingers fingers off, they can do quite a lot.
This video shows off both how good some drones are, and how good some of their controllers are.
Filmed in an abandoned hospital in Spain, the footage shows the drones whizzing around at high speeds, flipping upside down, through holes, up and down levels and corridors.
I really want a go of this!