Truthfully I don't think anyone really knows what they saw, many only saw that which they were told or led to believe. Anyway that footage from chopper 5 has been requested by more than a few via FOIA-----------To date none have been successful in obtaining it.
One of those involved in shooting it, and reporting it, met an untimely freak death by way of a NY City taxi cab jumping the curb and running him over. I think it was written off as an accident, maybe a bug got in the drivers eye, or he was possibly blinded by a bright light or something similar.
I'm sure there are lots of people who know way more than will ever be told to the public. Our Government has gotten very good at deception, particularly over these past few decades.
I myself will always be bummed at not paying closer attention to the events as they unfolded. I was too distracted by all of the money I was going to lose once the market reopened..