I would highly recommend Mover's video on the subject!
My personal opinion is that we don't know what the phenomena in these videos are, or that they're related, or that they jammed the missile's radar. It's a leap and a half to say that they're aliens or even that they're anything tangible. From a scientific perspective personal eyewitness accounts are one of the least reliable forms of evidence one could have. Also, I know that many people claim a radar contact disappearing then another contact appearing several miles away is depicting a single object travelling a great distance almost instantaneously in defiance of known physical principles. If one's explanation for this incident involves defying the laws of physics, however, I'd argue it's not a very compelling explanation. If you hear hooves, think horses, not zebras.
That all being said, I did enjoy watching the videos!