I don't think this is pure paranoia. The pilot did report seeing something, and the FBI came out with a series of transparently ridiculous statements, including the whopper that a bottle rocket could reach 6000 feet.
I'm not saying that it WAS a missile, but I'd feel a little better about it if the FBI would make at least a faint effort to investigate it and report on it honestly.
And this is not the first time. With TWA 800, there were several witnesses with wartime fighter experience who said that what they saw was a missile, and that the color of the explosion was wrong for a fuel tank explosion. The CIA person who was sent in to explain it did a pathetic job, and the center fuel tank explanation never made any sense.
This recent incident follows fairly shortly after the preposterous FBI coverup of the suicide bomber in Oklahoma.
I don't think it's unreasonable to expect a thorough and careful investigation. And I don't see why it's in our national interest to cover it up. Sure, the odds of being on a plane that gets shot down are very small; but if we are at war with fantical Islam, it would help to let people know that they are threatening us on our own home ground, if that is what is happening. Otherwise the Democrats will take advantage of the perception that nothing is happening and we should all go back to sleep.