the only point of reference I’ve seen is the only helicopter that goes across the screen in the video. The size of that contrail is not in any way from an airplane of any kind- unless that ‘airplane’ is a V-2 rocket!
For reference I have seen videos from Vandenburg AF Base launches that do look very similar, in addition to Space Shuttle launches which are huge even in comparison to this contrail.
So, what can “we” conclude from this event?
As for myself I go back to JFK. I was quite young when it happened but my memory is quite good. There have been many conspiracy explanations, non of which may be true, non satisfactory to me. The only thing I surmized from that piece of history is that authorities will go to great lenghts to cover their shortcomings.
Meanwhile, whatever truely occured persists undisturbed.