and david schanzer. he's the director of the triangle center on terrorism and homeland security at duke university and the university of north carolina. i want to start by asking you what the president had to say today. he said there was a systemic failure, a mix of human and systemic failure. what does that mean to you? >> well, that means that there's more than one fail. obviously first and foremost that people followed the screening that failed, but obviously the various watch list. the watch lists were targeted and revealed to be a problem in the summer of this year. there was a special report de by the office of inspector general, congress has addressed these issues, they knew that the screening wasn't good as well, so many things failed. thus his calling it a systemic failure. >> david schanzer is there a technology in place that could have avoided this kind of failure? >> well, the full body scan machines can do a better job and they can improve the likelihood of finding something like that, but t