UFOs: look at this article, what do you think they are?

7년 전

A UFO is an Unidentified Flying Object.

These are the latest pictures of these strange objects in America.

 https://sputniknews.com/viral/201912011077455919-theories-ufo-hunter-spike-sightings/ 

What do you think they are?

Are they aliens? Are they secret military experiments? Or are they something else?