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30 January 2007 So I wander into this nuclear reactor . . . This morning's news that the NRC has declined to force nuclear power plants to take additional precautions to prevent the breach of a nuclear reactor's core by attack with a jetliner comes as little surprise, given the Bush administration's attitudes about actual security issues. But, as always when I hear such news reports, I was taken back to a sunny spring morning some 30 years ago, when me and a couple of college buddies wandered into a nuclear reactor. It was the weekend of St. Pats day, and we were at the University of Missouri - Rolla to party with a friend of ours who was an engineering student there.  I think it was Friday morning, and our friend had some classes he had to attend, so myself and my two friends decided to just explore the campus a bit (we all attended schools elsewhere). I had considered Rolla for school myself a few years previously, when I had been thinking of going into physics (a dream derailed by poor higher-math skills).  So when we came across the research reactor building, I wanted to have a look. We just wandered in.  No, seriously.  We just wandered into the building, through a couple of sets of doors, and soon found ourselves standing at a railing, looking down at the glowing blue core of the nuclear reactor.  In this day and age it is hard to imagine such a thing - and even at the time it seemed more than a little odd. A few minutes after we came in, a nice fellow who fit the stereotype image of a science professor came over to us.  Short, grey, bearded, balding, wearing a white lab smock over his shirt and jeans.  He sort of looked us over, asked what we were up to . . . and then gave us an impromptu tour of the place (after tagging us with personal dosimeters). It was fascinating, to me at least.  The reactor core at this facility sits at the bottom of a large swimming pool, about 20 feet down.  That provides all the necessary protection from the radiation generated from operation of the fission reactor (which doesn't produce much power, and doesn't use the sort of fuel used in nuclear weapons).  Herr Doktor explained all this to us non-scientists, and also explained the eerie blue glow coming off the reactor (which was then in operation). It was a color like I've never seen before or since - a soft electric blue that was both intriguing and repulsive.  I knew what it was, having been interested in physics:  Cherenkov radiation, caused when the radioactive particles generated by the fission reactions are faster than the speed of light in the water.  But it's the sort of thing that lasts in the memory, embedded there in a way not unlike a religious experience - hard to describe, or explain, or convince others of, yet extremely vivid for the one who experienced it. Now, I'm not religious.  I'm an atheist, in fact.  I understand what that blue glow is - yet, whenever someone claims that they have had a religious experience, I can tie it to that same feeling I had on first seeing that other-worldly blue glow. Well, anyway, I had to share that personal experience, and add a bit of perspective on the changes we've seen in terms of security over the last 30 years.