And thank God for it. What you said is one big thing that I am very hopeful for and encouraged by. To have adequate shielding that would evade remote radioactivity detection, it would no longer be "easily mobile". It would have to be fixed in a small car, boat, or plane, and take two or more people to move it by hand. Two VERY large strapping people. That kind of shielding is quite heavy. :)
While I doubt anyone at the NSA or CIA would confirm it, I feel confident that there are at least a couple satellites in orbit right now that are capable of detecting radioactivity from orbit, and that they spend a great deal of their time combing the areas in and around American cities, especially those nine on the list in the World Net Daily article, looking for possible nuclear weapons or materials. There are surely quite a few people in the intelligence industry on the ground that do the same thing, with portable equipment that detects it from a distance also. And you can bet ALL of them know all the places, military bases and depots, nuclear reactors, hospitals, etc., that radioactive materials should be, and they certainly know all the places it shouldn't be. God willing if there are any in the country, the terrorists haven't found a hospital they've managed to hide it in. That's doubtful though.
While I doubt anyone at the NSA or CIA would confirm it, I feel confident that there are at least a couple satellites in orbit right now that are capable of detecting radioactivity from orbit…