When Hudson first heard about Gatwick, “I thought this was some absolute idiot and I wanted them caught.” But then he realised “the basic facts don’t add up”. Sussex police had mentioned lights in the corroborated sightings. But if someone had planned the attack, to the extent that they had procured scores of batteries and hacked the drone’s in-built geofencing software – which uses GPS to stop drones from flying into restricted zones such as airports or prisons – then why would they leave the lights on? “You’d disable them,” said Hudson.
The mystery of the Gatwick drone | UK news | The Guardian