In regard to his rejection from the CIA serving as the motive, that was my first hunch as well. But that was in 1963. 8 years seems like a long time to pass before acting on a grudge. But who knows. I'm sure there's a lot more to this story that we don't know yet.
As far as the clothing that will supposedly be unveiled today ---- just as Shutter said, I'm not sure how that can hold any water at all. A shirt or coat that dates back to the late 60s or early 70s isn't significant by itself.
Does Walt have any ties to the Pacific Northwest?
I'm intrigued, but a lot of questions remain.
