“There are lots of pictures.”
I went through the video and saw no pictures.
I’ll be lazy and ask you to say a little more about the physical trace issues.
I’m not a UFO denier.
I mean that there have been many photos of claimed ‘ufo’ sightings over the decades. Again, I don’t think a lot of pictures because I can’t assess them. But there are people who have specialized in analyzing them. Many years ago I talked to a man at what was then the Naval Surface Warfare facility that used to be here in White Oak, MD. (Can’t recall his name now - Bruce somebody) - but I think he was involved in photo analysis.
Regarding trace evidence, in the video, Vallee goes a little bit into materials he has had analyzed.
This website has links to a lot of information about trace cases, including one that discuss Ted Phillips’ work (links to photos there, too):
http://ufoevidence.org/topics/PhysicalTraceCases.htm