The following script is from “Drones Over America” which aired on March 16, 2014 , and was rebroadcast on June 22, 2014. Morley Safer is the correspondent. David Browning, producer.

They’re everywhere – we’re talking about drones – not the impersonal killing machines that patrol the badlands overseas, but drones used by the FBI, by university researchers, by amateur photographers, even by your nosy neighbors. As we reported in March, domestic drones are poised to become a multi-billion dollar industry, revolutionizing everything from crop management down on the farm to possibly – package delivery to your front door. The federal aviation administration is trying to figure out the rules of the road for drones, but for the moment, they’re barely regulated.