CBRN defense jobs focus on addressing the threat posed by chemical, biological, radiological, and nuclear weapons. These jobs often have titles like CBRN officer, CBRN specialist, and CBRN analyst. In this field, you may help prepare emergency response plans, evaluate the equipment, help determine the circumstance in which rescue operations are practical, and otherwise plan for the threat of warfare and the use of WMD devices in civilian areas. The military offers most CBRN defense jobs, but you can also find them with other important and sensitive facilities. For example, many hospitals have plans to address biological or chemical threats.