Two cases in point, Johhny Taliban from Marin County, Calif. and that National Guardsman from Washington state.
There are a lot of Muslims from Kosovo that could easily pass themselves off as blond haired blue eyed eastern europeans.
I don't trust that lawyer in Portland who was just released either. The one who was suspect in Madrid bombing. I think they let him go but I hope they are keeping a very close eye on him.