Someone in a major city one day is going to fly a 20kg drone by accident into the turbine of a passenger jet, and then no one will be able to operate a drone without a license and only in demarcated areas. The fucking things are dangerous. Did anyone see that video recently of a big drone artistic event where half of them fell from the sky? Organisers hold them over the water just in case something like this happens, but a couple fell onto the land. They would have killed someone.