Even the kinds of ingredients you can find in your own kitchen can be used to make bombs. So the problem is with the people and not with the tools.

I have not heard a report of thousands of people in the convention center who don't have food and water.

We now have capabilities in science and technology that raise the very realistic possibility that a small group of terrorists could kill not only thousands of people, as they did on September 11th, but hundreds of thousands of people. And that has changed the dimension of the threat we face.

We always monitor the flow of information, intelligence, threat streams to see whether we have any indication there's some imminent. We work hard to identify potential cells and disrupt them. This is one of the reasons we put so much emphasis on intelligence gathering.

Even the kinds of ingredients you can find in your own kitchen can be used to make bombs. So the problem is with the people and not with the tools.

I think the idea that you can go this alone is - was a huge mistake. And unfortunately, there was a price paid in terms of suffering and pain for people in New Orleans.

The Department of Defense took 40 years to get where it got.