well, let me put it this way. if they are that good, if they are able to be that self sufficient and totally autonomous down to the 2-5 man team level - we've got some serious problems, because I don't think we can detect and break up groups like that; and as I said, at that numerical level, they have no shortage of people already in the country who would be willing to go.
I agree with you. And I think they are that good. Well, let me rephrase that... I don't know how "good" you have to be to keep your head down for a year or two, and only interact with 2-5 people in your cell, and come up with some simple way to "cause problems" in the US. None of the individual attacks needs to be a big deal, but if a few hundred of them happened all across the country at the same time, it would be a problem.