There's No Real System to Counter Rogue Drones

Aeromexico Flight 773 from Guadalajara was just about to land last week when crew members heard a "pretty loud bang," according to a cabin recording. A mysterious aerial collision had left the nose of the passenger jet badly mangled. By the time it landed safely in Tijuana, there was no confirmed culprit but one likely suspect: a drone. If confirmed, the incident would represent one of a very small but growing number of mid-air crashes involving the small flying robots. The potential for tragic accidents--or deliberate attacks--has grown as drones have proliferated among hobbyists and businesses.