1:  They had them , but they did n't work , because the police turned up and they were shot down and they did n't have the time to get these vests to work . 2: Because had they done so , we would have had major catastrophe ,  President Beji Caid Essebsi told CNN 's Christiane Amanpour . 3: Police shot them before they could detonate the vests , Beji Caid Essebsi says .
1: They 2: they 3: they