The article and the link speak for themselves. I am sufficiently open-minded to be interested in any point on point rebuttal.
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I've seen plenty of things in the air that I couldn't identify -- especially at night.
What I have not seen is anything, the appearance of which excluded or prohibited the conclusion that it was of terrestrial origin or some natural phenomena.
If I ever did see such a thing I'd hope to get a good long look at it. In fact, I wouldn't mind investigating the subject -- most witnesses never seem to be questioned at all effectively.
To state yet again . . . my close blood relative saw them coming and going routinely in his Nevada highly classified job.