One person too many.
There's a four-letter agency which is very interested in failing airplane engines. They investigate very thoroughly and take the better part of a year to cough up their findings. And there's a three-letter agency they call if they find signs of foul play.
If you are a competent assassin, why would you risk their involvement, when a Bushmaster is all you'd need?
Then it would look like an assassination, with all the usual publicity and investigations, instead of an accident and death by natural causes, which satisfies the curious and gives people a reason to stop thinking about it.
Either way, the target is dead and a message sent, but one is very messy and the other very clean.
Are we even sure that Loretta Fuddy is dead and now buried (in the ground, rather than underground)?
Admittedly, given the "official" story, that has to sound like crazy, conspiratorial thinking.
But, fwiw, we didn't see bin Laden's body and, with this administration's ability to lie and deceive, I see no reason to believe he's dead without the pics.
At this point, with all of our experience so far, even if they're telling the truth, I don't believe there's a wolf anymore.