Here is the full text of the statement from Pistole, a former deputy director of the FBI:
"We welcome feedback and comments on the screening procedures from the traveling public, and we will work to make them as minimally invasive as possible, while still providing the security that the American people want and deserve. We are constantly evaluating and adapting our security measures, and as we have said from the beginning, we are seeking to strike the right balance between privacy and security.
“In all such security programs, especially those that are applied nationwide, there is a continual process of refinement and adjustment to ensure that best practices are applied and that feedback and comment from the traveling public is taken into account. This has always been viewed as an evolving program that will be adapted as conditions warrant, and we greatly appreciate the cooperation and understanding of the American people.
“We cannot forget that less than one year ago a suicide bomber with explosives in his underwear tried to bring down a plane over Detroit. The terrorists allegedly behind the thwarted cargo attempt last month are out there bragging about how they will strike again.
“We all wish we lived in a world where security procedures at airports weren't necessary, but that just isn't the case."
http://www.politico.com/news/stories/1110/45460.html