Categorya News Today

Practice and train on. >> reporter: jon stewart is the director of the fbis hazardous devices school in huntsville, alabama. >> theres about 2900 that protect us across america and they all come here for their initial training. >> reporter: bomb techs embedded with s.w.a.t. teams after pressure cooker bombs were used at the boston marathon. a couple used bombs to kiln san persokill insan bernardino two . >> this is category a. you have a hostage and a live device and something called a dead mans...