you also take kaopectate. new kaopectate caplets -- soothing relief for all those symptoms. kaopectate. one and done. ♪ >> reporter: december 14, 2012, the connecticut elementary school under assault. within minutes, six adults and 20 children massacred. just three days later, another school, this one in florida, goes into lockdown. and miami-dade police negotiator victor millian is called into action. >> part of the information i received was that there were multiple weapons involved, to include grenades. >> reporter: the shooter isn't