I did not want to provide a blueprint or roadmap for the terrorists, saying 'Here are our new security procedures'.

I particularly recognize that reasonable people can disagree as to what that proper balance or blend is between privacy and security and safety.

I did not want to provide a blueprint or roadmap for the terrorists, saying 'Here are our new security procedures'.

The bottom line is how do we best provide for the security of the traveling public in light of a determined enemy who is adept at constructing well-designed, well-concealed devices which would not show up in a walk-through metal detector? We're trying to employ the best technology to identify any possible threat.

And so we try to address those concerns in every way possible, recognizing, again, in the final analysis, everybody on that flight wants to be assured with the highest level of confidence that everybody else on that flight has been properly screened, and including me and you and everybody.

The reason we are doing these types of pat downs and using the advanced imagery technology is trying to take the latest intelligence and how we know al Qaeda and affiliates want to hurt us, they want to bring down whether it is passenger air craft or cargo aircraft.

We want to be sensitive to people's concerns about privacy about their personal being and things, while ensuring that everybody on every flight has been properly screened.