I'm a huge fan of documentaries in general but I usually stay from this type because the producers are typically pushing their own theory, which is often just plain silly (take the 9/11 conspiracy advocates for example). But that's not the case here-- this film simply exposes a number of very troubling issues with the investigation of Flight 800.
We know that the FBI lied about certain aspects of the Branch Davidian tragedy in Texas and here we have several long-time NTSB investigators telling us that the FBI concealed and/or "disappeared" evidence, and that a number of FBI agents were caught tampering with evidence. One has to wonder why.
One eyewitness describes telling her story to FBI agents, who then reveal that they know she has applied for US citizenship and advise her that she should not mention what she saw to anyone if she wants her application to be approved. *If* she's telling the truth then the FBI had done a background check on her *before* getting her witness statement. Why would the FBI run a background check before the fact on a witness to an air disaster? Other witnesses claim to have been intimidated as well. Again, why?
It's entirely possible that the plane really was brought down by a fuel tank explosion, but that in the earlier stages of the investigation the FBI thought the cause was something they/the US government wanted to conceal. This documentary doesn't push its own theory of the cause so much as it seems to expose a huge number of irregularities in the investigation. If even a few of the claims made within are true the already heavily discredited FBI looks even worse. Considering the FBI's abject failures in the intervening years it's not difficult to believe that the Bureau was playing politics here as well.
Unfortunately, this film provides more questions than answers, but credit to the producers for not working backward from their own theory and instead simply giving investigators and witnesses a chance to be heard. Sure, it's obvious that the producers don't buy the official explanation for the crash so the film is made from that perspective, but the government had its say in hearings (while apparently suppressing alternate views & evidence), so this piece of work offers an interesting counterpoint.
See it for yourself and see if it doesn't leave you wondering why the FBI has "botched" so many highly political investigations in the past few decades.