The crash of TWA Flight 800 was very likely caused by a US Navy training accident. If I recall correctly the USS Wyoming was on sea trials, and after the tragic accident the captain and first officer were replaced.
A substantial number of trained observers (former combat pilots) reported seeing a missile hit the plane. By then the coverup was in full force, complete with CIA-generated cartoons. The missile was apparently unarmed, but unfortunately still enough to inflict fatal damage on TWA flight 800.
Where's the story about those Navy people being fired? Oh, I guess it was 'hushed' up.
Wyoming is an Ohio class SSBN. She was placed in commission just 4 days before the flight 800 accident. The only way she could shoot down an airplane is with a Trident ICBM. She may not have even been loaded with weapons at the time she was on trials.