Emerging Threats in Public Health: Explosives This multimedia training is designed to educate public health professionals about explosives. The content is divided into two modules. Module 1: Introduction to Explosives; Module 2: Explosives and the Public Health Response. Throughout these modules, learners progress through interactive lessons covering basic information about the threat of explosives, history of explosives, agent: characteristics of explosives, environment: locations of explosives, host: injuries related to explosives, and the public health response. (2005). Audience: General Public Health Format(s): CD-ROM, Webcast