The investigation of TWA 800 was unlawfully taken away from the National Transportation Safety Board and given to the FBI which immediately began stonewalling all the credible eyewitnesses and evidence.
The government runs around and seizes FAA radar tapes and orders government employees and the military to say nothing about what they saw or heard. I think what is gone now is the trust of the public in the process of investigating these crashes. A number of people I have talked to said if American 587 is a terrorist-caused crash, the government will never admit to it. I agree with that.
The only response to all of this is for the public to stop flying until the government returns truthful disclosure to these investigations. If the average citizen can't be told why planes have crashed, why should anyone get on one?