<p>On Nov. 18, 1997, the CIA and the FBI announced the end of the criminal investigation of TWA Flight 800 with the presentation of a video that ostensibly put to rest theories that the Paris-bound Boeing 747 had been destroyed by a bomb or missile.</p>
<p>With the 14-minute video, investigators overcame the biggest obstacle to the mechanical failure theory – 736 eyewitnesses, including the key witnesses who said they saw an ascending streak head toward the jetliner before it broke apart.</p>