As Congress asks if full-body scanners are "Effective Security or Security Theater?" we examine safety concerns at the heart of a lawsuit that seeks a freeze on the use body scanners pending an independent review. The Transportation and Security Administration has installed about 640 full-body millimeter wave and X-ray backscatter scanners at 65 airports as of January. Those who object to the full-body scans are subject to enhanced pat-downs and extremely invasive manual checks. We're joined by Marc Rotenberg, Executive Director of the Electronic Privacy Information Center, which is suing the TSA; and ProPublica reporter, Michael Grabell, author of a series of critical articles on the new scanners.