Creative Speculation

Again, to clarify, I think Oswald did the shooting and acted alone.

But plenty of people could reason that the corner of Houston and Elm was not exactly the right place to wait for a bus in the aftermath of the assassination of the President that just took place...a block away. There are perfectly innocent reasons to put some distance between yourself and the major world-historical commotion if you're trying to catch a bus; there are also good reasons to take the first bus that gets you anywhere near your destination, since it's unclear what the traffic and service delays will be or whether bus service will even continue through the emergency.

(17) doesn't speak to me.