The threat from UAV (unmanned aerial vehicles) or flying robots is a growing concern. The technology for building flying bombs is becoming cheaper and more obtainable. Breitbart.com reports:
It may sound like science fiction, but the prospect that suicide bombers and hijackers could be made redundant by flying robots is a real one, according to experts.
The technology for remote-controlled light aircraft is now highly advanced, widely available -- and, experts say, virtually unstoppable.
Models with a wingspan of five metres (16 feet), capable of carrying up to 50 kilograms (110 pounds), remain undetectable by radar.
And thanks to satellite positioning systems, they can now be programmed to hit targets some distance away with just a few metres (yards) short of pinpoint accuracy.
Bruce Simpson, an engineer from New Zealand, has even built his own DIY (do-it-yourself) cruise missle for less than $5000.
Did the US Government "lean" on the New Zealand Government, forcing them to shut down Mr. Simpson's DIY cruise missile project?
Flying robot attack "unstoppable": experts [breitbart.com]
A DIY Cruise Missile [interestingprojects.com]