[iconoclast]

Good analysis. I agree with you on almost all points.

Two significant points of disagreement ... I think it's probably one person in a commercial van (although Columbine showed us that nuts can occur in pairs), and I do not think it's Arabs.

[OReilly]

I think it's probably one person in a commercial van

Reduced likelihood of apprehension...

[CobaltBlue]

I don't think it's Arabs, either.

I know a lot of people who can shoot like that. They are all hunters. They hunt deer, moose, elk, bear. They love to hunt.

[twigs]

I do not think it's Arabs.

Remember, many of us believed that Timoty McVeigh was a homegrown terrorist. As it seems to be turning out, he had Iraqi connections. So even if this is a military- or LE-trained marksman, that does not mean he is not connected to terrorists. Unfortunately.