While air traffic control systems track, guide and monitor thousands of planes and helicopters every day, one group of sky flyers remains unmonitored: drones. In recent years, small unmanned aerial vehicles (UAVs), such as commercial quadcopters and hobby drones , have become less expensive and easier to fly — adding traffic to airspace that’s already congested. Drones are also more adaptable for terrorist or military purposes, and because they are […]
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