While the FBI says a recent spate of drone sightings over New Jersey don’t pose a threat to national security, the event is a stark reminder that drone warfare could one day reach America.

Federal agencies report having received several thousand tips from public sightings of moving lights in the sky in New Jersey and along the East Coast; the Federal Aviation Administration is taking the situation seriously enough that it has banned drones from flying over “critical New Jersey infrastructure.

Mysterious drones have been reported flying over the eastern United States in recent weeks, sparking speculation and concern over who is flying them and why. Federal authorities say there's no