I think a lot of them are natural phenomenon, but I've also lived in the middle of the desert and saw some really interesting vehicles and aircraft tested out a long time ago, so it wouldn't surprise me if a lot of UFO sightings were different militaries. I wouldn't discount every sighting as those but most, if not all, of the sightings would be those two things
Weather balloons, most of them are weather balloons
Drugs
I think a lot of them are natural phenomenon, but I've also lived in the middle of the desert and saw some really interesting vehicles and aircraft tested out a long time ago, so it wouldn't surprise me if a lot of UFO sightings were different militaries. I wouldn't discount every sighting as those but most, if not all, of the sightings would be those two things