An anonymous reader writes:Slate notes that " This is bad news if you were planning to invest in the DroneDefender, a goofy-looking gun that promised to disrupt intrusive drones by bombarding them 'with radio waves that disrupt [their] remote control and GPS signals'." And Popular Science adds that "It also poses a complication for some local and state laws, like Utah's proposed HB 420, which would let police shoot down drones in emergency situations ." Meanwhile, police in the Netherlands are actually training eagles to attack drones . And last week in South Africa, a drone crashed through the window of an office building and hit an unarmed office worker on the head.