[RoosterRedux]

Further, if one or two crashed, how many exist in total?

That question was posed by Ross Coulthart to the whistleblower in question. A snippet from that interview appeared in the NewsNation report last night here:

Snippet of Ross Coulthard interview with David Charles Grusch

Note that the part of the interview which answers your question of "how many" starts HERE (3:53 mark).

[tired&retired]

Thank you for posting the link.

It is much appreciated.