'Your papers, please' must never be heard in America

Physicists who led the development of today's most sophisticated medical imaging technology believe the federal government's X-rated airport x-ray scanners are useless. Leon Kaufman and Joseph W. Carlson, both former professors of physics at the University of California-San Francisco have been described as the "scientific genius" behind the magnetic resonance imaging (MRI) machines used in hospitals. The pair turned their considerable experience to investigate what the Transportation Security Administration (TSA) is using to virtually undress millions of American travelers.