See, this is what confuses me. With POTUS, state and local LE is there in the vacinity. Always. They are part of the security teams! SS and FBI do not handle it all themselves! They can't. Here's my assumption - it is the same exact way for VP, even on a hunting trip. So, what is this that the LE didn't know for hours? There is NO way that this accident happened, ambulance and emergency personnel whisk W off to hospital, and that VP just stays in place and no outside LE is notified that there has been an accidental shooting. Hello! They're all on the same radio channels, etc. What may be the confusion, however, is that the SS and FBI would be the primary investigators. And therefore, they wouldn't be required to "report it to the police" in terms of an investigation. (In fact, the more I think about this, THAT may be the confusion. A delay in "reporting?" Ahhh, they aren't required to report it for an actual investigation, so why would they do so if not required?) Now, if you want to assume that the SS and FBI will do what they can to cover their man, that's up to every individual to decide for themselves, IMO.
And, you can bet that other people have been thoroughly interviewed as witnesses to the day's activities. The drinking, behaviors of those drinking and involved, will all be told at some point. Now, whether all the actual investigative info ever becomes public, I have no idea. But the way leaks occur, some will at some point.
However, the statements (I don't know how they started, though) that SS delayed access to Cheney until the next day - that worries me some, but not necessarily a lot. Anyone read how that started, like who reported the delay? Has it been confirmed by a reputable source?
(And now that I thought through who the primary investigators would be, above, well, that makes more sense now. They didn't have to "report it" to the little LE agency for the official investigation.)