The information I have is that the U.S. Navy was testing a new technology, classified surface to air missle. The test missile went astray after it was launched and a second missle was fired to destroy the first. The end result of the failed test was the downing of TWA 800.(similar to the Russian airliner shot down by a surface to air missle launched by Ukraine last year).
Had Clinton as commander in chief announced that the U.S Navy had shot down TWA 800 it is very likely the voters would have held him accountable in the November election.