Perhaps there was a carmera pointed right out the window and it was destroyed.

The point is, you need to line up about 20 "what ifs" to make this theory "something to think about" rather than going for the simplest explaination. It's human nature and ever since JFK was killed, Watergate and Roswell, we're always going to look at things this way. I guess it'd be a good episode for the XFiles.
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Brad B.