They have power. And we might get hit again. But, the war has been won. It might take the terrorist a year or two to figure it out, but it's over. We won. It's inevitable.
We beat Japan when the first atomic bomb was dropped on Japan. The Japanese didn't see the win for weeks. This is the same. The tipping point has happened and the win is inevitable.
A man shot through the heart doesn't die instantly. The 18 seconds of a dead man. He can still shoot back as he falls.