The local Boston station I was watching that evening was patched through live to a NYC station. I distinctly remember at least a half dozen testimonials from people on or near the beach describing a missile flying from the horizon to the aircraft prior to the break up. One in particular was a former military officer who said that he was certain he saw a missile. Revisionists can deny it all they want, but I remember watching the aftermath live and hearing the reports at that time of a missile.
http://www.worldnetdaily.com/news/article.asp?ARTICLE_ID=57375
An interesting read on the fate of the possible video of the last moments of TWA 800.