It used to be that incidents like these would be reported as UFOs. I wonder if someone had advanced drone technology 50 (ish) years ago? Or are some of the current "sightings" UFOs but there's now a plausible explanation (drones). The most curious report is the drone with the "balloon-like center" - might this have been reported as a weather balloon in the past?

Note: I'm using the term UFO as it's original acronym and don't mean to imply they're flown by the proverbial little green men.

EDIT: I'm using the term "little green men" in the gender neutral form and am not intentionally impuning the flying capabilities of little green women.