The article doesn't say there is no video evidence. Seems like at least two separate helicopters saw and pursued it. The FBI have enough evidence to describe its size. They may have video they aren't sharing. Odd thing to make up.

One of the articles[1] linked to in this article has scans of the Tucson PD's report which does state explicitly that there was no video evidence[2]

[1] https://www.thedrive.com/the-war-zone/41223/tucson-mystery-d...

[2] https://www.thedrive.com/content-b/message-editor%2F16243890...

Not that I believe these click garantueed UFO stories, but the other day I was trying to take a pic of butterflies literally 3 feet away and I barely got anything more than a smudge.

Just saying quite hard taking pics of moving objects even though cameras are quite good...

Especially at night, and the drone apparently only had a small light on it, so you'd probably make out nothing on the video.

Police had IR cameras yet could not pickup it's heat signature yet they were chasing a green light for the duration and speed only possible for jet propelled craft.

Some UFO story.