The Govt knew everything that was going on and the FBI (some of them) were obviously in on it. Whether or not highjackers were ever on the plane is irrelevent at this point. Prior knowledge is a foregone conclusion in my book. The FBI had no interest in your story, they had no interest in arresting anyone. Moussaiou was a scapegoat and was probably made a sweetheart deal of some kind to do what he did. I think whats more interesting is that your in Florida, where Jeb happens to be dictator. Anything that happens there can be easily covered up. I would guesstimate that most of the cia shipments of drugs is coming through FL.