Jon Stewart has spent more than 20 years researching the authenticity of a VHS Tape showing an alleged interrogation of a Gray Alien who was captured sometime around 1991. 

He watched the video soon after its release in 1996 and became intrigued by its realistic depiction of the Gray Alien. 
Stewart consulted video and animation experts, who did not detect any forgery. Stewart received a list of medical and military personnel directly involved in the interrogation and was able to speak with several of the named individuals. 
He also learned about a disgruntled group of military insiders associated with the infamous S-4 facility at Area 51 who revealed they were behind the leaked video. 
Stewart concludes that the tape is authentic and was leaked by an insider called Victor.

https://ufosightingshotspot.blogspot.com/2023/04/investigation-1996-gray-alien.html