After returning from a business trip earlier this week, I undertook the all too familiar task of sorting through mail, newspapers and magazines that had accumulated during my absence. Among the articles were a number of stories from different parts of the country that reported about local officials having ordered evacuations of neighborhoods because of the release of toxic gases. The largest incident, in North Carolina, required 17,000 residents to evacuate their homes -- from a town of 28,000. The residents were ordered out because of a fire at an industrial site, a hazardous waste business that housed a variety of volatile chemicals, including chlorine. These toxic releases were not related to acts of terrorism, but do highlight the inherent danger of living near chemical facilities