[Brian Swartz]

I think the problem with the sightings is that even highly trained professionals are very susceptible to the flaws in human observation by our own senses. I.e. eyewitness testimony/observations are notoriously unreliable.

I think NDT has a very good point on this. If these kinds of things are happening, why in a technological era where we have high-definition videos of just about every thing you can imagine, are there no high-quality videos of alien abduction/UFO encounters/etc?

I think it's possible, but I also find the state of evidence available to date highly unconvincing. There are a lot of people who really, really want it to be true, just like they want JWST to find alien civilizations (the fact that it isn't designed to do that notwithstanding).