Drones swamp US-Mexico border but federal agents powerless to stop them

The Department of Homeland Security and the FBI identified this week unmanned aerial systems, or drones, as one of the greatest national security threats to America — rating it as severe a concern as cybersecurity hacks, critical infrastructure attacks, and terrorism.

While drones are often thought of as techie toys, officials are becoming increasingly worried about the threat they pose and are warning it's only a matter of time until the devices are used to drop a bomb or fentanyl powder on people in a populated area. Drones are already used by transnational criminal syndicates and drug cartels. The technology is readily available to terrorist groups.

Incidents that have gained public attention in recent years have largely involved inexperienced fliers losing control of the aircraft, but the military and law enforcement officers are already dealing with cases of drones being used for illicit purposes.

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