In the fog of chaos, its easy to think this or that, and sometime's people as witnesses are right and sometimes they're wrong. At the end of it though, you either believe that local officials along with federal officials are involved in a massive cover up, or they aren't. Really that's what you have to ask yourself. They're all in on it, (or a lot of them are), or maybe there actually was only one shooter in spite of the fog and chaos.