But what I want to assure and reassure the public is we are concerned about your safety, your security, and your privacy. Let's work together in partnership to ensure that we can have the best way forward.

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

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.

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

But what I want to assure and reassure the public is we are concerned about your safety, your security, and your privacy. Let's work together in partnership to ensure that we can have the best way forward.

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.

We put people of concern on the watch list or the no-fly list, so we have a number of layers of security beyond the airport checkpoint. We gather as much information about a passenger as the law allows without profiling.