Homeland Security Secretary Alejandro Mayorka said some of the sightings were of people mistaking ordinary aircraft for drones, with witnesses urged to check Flightradar24 if they see one, to see if it is actually a scheduled flight.
Mystery drones above UK and US ‘should be treated as serious national security issue’ To view this video please enable JavaScript, and consider upgrading to a web browser that supports HTML5 video.
Nick Pope, who investigated UFOs for the Ministry of Defence, said though some of these sightings are likely hobbyist drones, others could be more complicated in origin, including from malicious foreign actors.
Unexplained ‘drones’ spotted above multiple US states should be treated as a serious issue, a former Ministry of Defence investigator has told Metro.
Mr Pope told Metro: ‘Such systems can be larger and more sophisticated than ordinary drones, not least because they need to be able to stay airborne for longer periods.
