[Route66]

"If a rifle is being used, it would be too obvious to walk around with."

You are probably right, but I have a friend who is a military sniper. He has told me thay are trained to do this -in urban areas- and not be seen. Could someone very well trained pull this off on foot? Just wondering.

[DWPittelli]

On foot? No, he'd need a car. Size and sound blast of rifle would make it hard to run away from 6 crime scenes.

On other note, I have to concede that my earlier speculation of UN/maryland link was pretty obviously wrong. That said, the Maryland thing is highly unusual in a way that means we have to call it at least a 50/50 proposition that Islamofascist terrorists are involved.

[two23]

"Could someone very well trained pull this off on foot? Just wondering

I may be proved wrong, but I believe the person(s) probably have some background in firearms/training. Either LE, x-military or just hunting/range targeting..anything is possible at this point cause we don't know much.