There's so much stuff available in the public discourse and reddit, I am not scholarly enough to keep up! Quite frankly, my dear friend, you are so well read I would hire you for my team. As a volunteer at MUFON, I don't get paid much, but I would gladly double salary to hold you! :)
I am afraid I know nothing about this Gordan guy, and a cursory search led me to nothing that jogged a memory cell. It not the 1960is video of a craft going up and down against the mountain backdrop, is it?
I probably should have been dropping posts and responding to reddit years ago. There's some outstanding folks there that could certainly add to my knowledge, and underscore how seriously deficient I am in knowledge. I wish I could convey just how much material is available that very few people know. And it's not like it's secret information, it's not amplified. The cursory view from the outside would have you believe it's all fringe and very little. It's mountainous!
In you vast readings, ever heard of Doctor James McDonald? 'project 1947' Symposium on UFOs; his statement:
http://www.project1947.com/shg/symposium/mcdonald.html#prepstmt