Amateur terror cells, incited by generalized rhetoric from jihadist websites, in poor communication with any central structure.
That's what we have in our country right now after over a decade of taking it to AQ overseas, but doing nothing about it here.
So what's your point?
Same as it was before, that this was probably a Muslim version of James Holmes, with a partial Islamist motivation. Partial because they did not go around whacking any civilian they could lay their hands on, the way thoroughly indoctrinated Islamist pros have done in pretty much every attack they've mounted.