Resilience is part of the strategy because resilience is part of response and what resilience means - let's go back to having the food and water. Having the food and water, having the capability to sustain yourself until things get better, that is resilience. Backing up your records on a back-up server is resilience. Having the capability to replace power lines that are down or having a back-up generator, that's resilience. That is something that is at the core of what we think is an appropriate response. I remember a couple of years ago in the latter of 2006 I wrote - the Secretary of Energy and I wrote the CEOs of the various oil companies and said to them you really have the responsibility to make sure that your distributors, your franchisees have generators at the gas stations so when the power goes down you can start up the gas pumps, fill up the trucks so the workers can go to the power plants so they can start the power up again. So we have always viewed resiliency as an important part of the strategy. That doesn't mean you don't try to prevent. It just means that you recognize that 100 percent prevention is not something that you can count on. (DHS, Remarks by... Chertoff... at a Blogger Roundtable..., 20May2008)