There is speculation that the secrets that Mr. Burger was sent to scrub was the TWA flight 800 information. There were over 50 eye witnesses to a missle of some type leaveing the earth and striking the aircraft. Also, there were reports that the FAA has a video of radar inmages indicating a missle strike. They even looked at a US Navy ship in the area to find out if it had fired a missle.
A helicopter unit training that night got a presidential "shut up" order from Bubba about it as well.
They have Aircraft Survivability Equipment (ASE) that detects missile launches and warns the pilot over the "Bitchin' Betty".
Not sure exactly how it works, I was artillery not a heckabug driver, but I remember a news interview with a pilot type and he said he thought the missile was coming at him.
After that, that unit was told to shut up, and the newsies seemed to expunge the tapeof the broadcast.
Thanks for your point.