Drone mystery: New Jersey homeowners threaten to take matters into their own hands if government doesn't act

We have no evidence at this time that the reported drone sightings pose a national security or a public safety threat or have a foreign nexus,

national security communications adviser John Kirby told reporters

There is nothing known that would lead me to say that, but we just don’t know and that’s the concerning part

At the hearing, Robert Wheeler, assistant FBI director, said