Decent on-topic articles about radiation detection technology and what DHS and TSA are doing: <a href="http://findarticles.com/p/articles/mi_m0QXQ/is_2008_June_23/ai_n27892206?tag=content;col1" target="_blank">http://findarticles.com/p/articles/mi_m0QXQ/is_2008_June_23/ai_n27892206?tag=content;col1</a> <a href="http://www.dhs.gov/xnews/releases/press_release_0274.shtm" target="_blank">http://www.dhs.gov/xnews/releases/press_release_0274.shtm</a> <a href="http://www.sandia.gov/mission/homeland/factsheets/new05/Detection.Technologies.pdf" target="_blank">http://www.sandia.gov/mission/homeland/factsheets/new05/Detection.Technologies.pdf</a> <a href="http://findarticles.com/p/articles/mi_m0EIN/is_2007_August_1/ai_n27329201" target="_blank">http://findarticles.com/p/articles/mi_m0EIN/is_2007_August_1/ai_n27329201</a> <a href="http://ronbeas2.blogspot.com/2007/11/mystery-surrounding-tsa-systems.html" target="_blank">http://ronbeas2.blogspot.com/2007/11/mystery-surrounding-tsa-systems.html</a>