There are other cells out there preparing attacks (my wife's work was probably "probed" recently) and there are other cells awaiting word to strike and there are terrorists in training to follow them and to follow them and to follow them.
This is gonna be a long war. I saw the most _sh*ty-assed_ poll the other day asking if Americans were prepared to have a war if it meant "1000 casualties."
Try one that says "100,000 civilian casualties."