You are still ignoring that this is the only time it was ever seen that day or, as far as we know any other day, It has not been seen going in an out of any of the locations you mention, ever. It was not seen en route at any point, ever. Given the transit speeds you suggest that is unlikely. A craft like that would be visible on radar, it is not that stealthy, so we have to assume they are all in on it too, both civil and military.
Finally, why on earth would a fancy airship be a black project?
Last edited by Ninthace; 7th Mar 2023 at 21:39.