It's the infamous b&w alien autopsy video, released in 95, you know that one with the pot belly alien with it's leg cut open

This video Santilli has since admitted to it being a reproduction and that only a couple of Frames in the video were from the original footage

Kit Green (ex CIA) said that he first saw photographs of said autopsy in 87/88, he also got to read the autopsy reports. He said the photos were consistent with the 95 Santilli footage. Keeping in mind that he says the photos were shown to him by the Pentagon.