As civilization and society evolves, so do the threats and challenges we face both at home and on the job. Advancements in how we live and work have provided myriad benefits, but they have also made threats to our safety more complex than ever. Pollution and climate change has increased the number and severity of natural disasters worldwide. Developments in industrial manufacturing and transportation lead to workplace mishaps and traffic hazards. Our interaction with, and even dependence on, technology has opened us up to security threats that we would have never imagined more than 30 years ago.