It would be unwise to say the least, irresponsible of us at the TSA, at the Homeland Security Department not to evolve our technology to match the changing threat environment that we inhabit.

There are a number of countries that we see cyber-attacks emanating from. And, again, they can be just individuals who are located in the country. But three that I think are of special concern would be Iran, would be Russia, and China.

If American schooling is inadequate now, just imagine how much more obsolete it will be when today's kindergarten students graduate from high school in just 12 years.

I've appointed a task force to take a fresh look at the color-code system and whether we should retain it, change it or scrap it.

As part of our layered approach, we have expedited the deployment of new Advanced Imaging Technology (AIT) units to help detect concealed metallic and non-metallic threats on passengers. These machines are now in use at airports nationwide, and the vast majority of travelers say they prefer this technology to alternative screening measures.

The United States is the nation of innovation. And we have the best innovators, really, in the world. Our international property is one of our huge national economic assets. Yes, so to the extent that some are seeking to infiltrate our network, steal that information, not to have invest in the research and development that goes into innovation, that's a really big deal.

One of the most striking elements of today's threat picture is that plots to attack America increasingly involve American residents and citizens.