Again, Mr. Chair, that's a great question.
One could argue about what other capabilities. Did they actually exist, or should they exist? The other piece you talk about is attacks on our critical infrastructure. As we take a look at deterrence, how do we deter those attacks? One of the concepts or one of the sub-elements of deterrence is deterrence by denial. What that means is that adversaries' attacks are not successful, so they won't try it in the first place. If we can identify those single points of failure, if we can prove to be resilient as a society, as a nation, to thwart the intent of those attacks, they may not happen in the first place.
Our adversaries are looking for soft targets. We've learned this on operations around the world. If we present a soft target, we invite ourselves for attack.