THE VAST hangar of HMS Prince of Wales, Britain’s newest aircraft-carrier, houses no warplanes yet. But there are plenty of drones. “If we wanted to see over a hill, we had to send someone up,” explains a marine. Now, he says, pointing to a 7kg Puma drone that can be thrown into the air, “we can soak an area before we put lads on the ground”. The Puma sits in the sky at 10,000 feet—too high to be seen or heard—beaming back footage detailed enough to see individual weapons. His colleague shows off the Hero,

Source : Defence technology – How drone swarms will defend Britain | Britain | The Economist