Drones are not new

Suspended from the ceiling of the Canadian Museum of Flight in Langley, this Northrup Shelduck target drone dates back to the late 1940s. It was developed in the US. Driven by a jet engine, this unmanned drone could stay aloft for an hour or two, long enough to be used for gunnery practice from fighter aircraft as well as for aiming ground-launched missiles. Many nations used the technology.

Who'd have imagined then that toy drones would one day proliferate and become a nuisance, even a threat, to normal aviation?