747s have flown many billions of miles now with exactly one aledged instance of any problem with with wiring passing through th central fuel tank. Put with that the eye witness observations of many witnesses some of whom were trained military observers and you come up with yet another massive cover up operation IMHO.
What I believe?
Fuel vapor doesn't ignite without oxygen. Forget the tank.
Over 100 witnesses recounted seeing 'something' go up and an explosion following. Some were pilots, in the air at the time, with combat experience. Some were in a variety of locations on shore. All saw the same sort of thing, and the general bearings of those sightings roughly coincide. The FBI interviewed umpteen people and got tens of thousands of pages of testimony, but left all those folks out. An egregious omission, to say the least.
The reporters who obtained the seat fabric material that tested positive for PETN were arrested, incarcerated, and frankly, I don't know from there.
The Clinton administration was desperately trying to paint domestic gun owners as terrorists, especially after Waco and OK City. The idea of Muslim terrorists still hadn't percolated through despite Abdul Rahman's bunch bombing the WTC. The later stovepiping of information from different intelligence collection agencies and Bureaus (Gorelick Memo) directly affected the ability to prevent the 9/11 attacks. (Gorelick later sat on the 9/11 Commission, which was a total miscarriage of justice, imho).
Whether a terrorist attack or a terrible accident (a remote possibility I won't delve into), the "Investigation" was a cover-up, and that's why the FBI took over, to control the data. The CIA stepping in to craft a cartoon was the icing on that cake, as they really don't ordinarily have squat to do with investigating air crashes.
Usually the FBI can take over when terrorism is suspected. That time they were there to seal the files. Imho, they've been openly compromised since the HRT took down Vicky Weaver.