You can't imagine a world, quite frankly, without a safe and secure aviation system. And so our job is to really focus on that, and what we need to do to keep it safe and secure.

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.

And we ask the American people to play an important part of our layered defense. We ask for cooperation, patience and a commitment to vigilance in the face of a determined enemy.

Each and every one of the security measures we implement serves an important goal: providing safe and efficient air travel for the millions of people who rely on our aviation system every day.

You show me a 50-foot wall and I'll show you a 51-foot ladder.

I have long been a proponent of a guest-worker program between the United States and Mexico, and in particular I have proposed that Arizona would be an ideal location for a pilot project.

It is fair to say there are individuals in the United States who ascribe to al-Qaeda-type beliefs.