You Won't Like The Answer
I've seen this reaction to the discussion of the Pentagon shooter a couple of places from Truthers, including here by Truth Action correspondent Arceterus:
It is funny, isn't it, how whenever a murder is committed, you don't hear about how they believed in the official story of 9/11. It's only when they're 9/11 truthers that the pieces suddenly come together.
Why is that? It's pretty simple, actually. When you hear that somebody believes the "official story of 9/11" the response is much the same as when you hear that they believe the sky is blue. On the other hand, when you hear that somebody believes the government was behind 9/11, the reaction is much like this: