The U.S. lacks a National Drone Strategy, risking security, innovation, and global leadership, says DroneUp CEO Tom Walker.

While radar, radio frequency and camera technology are all options for drone detection, DroneShield uses acoustic sensing, its new CEO, James Walker, told Mashable Australia. "We record the noises ...

Drones, search dogs and a helicopter are all ... Officers are concerned for the welfare of the "keen walker" and birdwatcher, who regularly treks in the area, the force said.