(b)(7)(F) Test Initiated . 8 : 20 AM Testi ng Complete . 10 : 00 AM Institutional count in progress 'b)(7)(F) AM Good verbal count announced AM Cl ear instit utiona l count 3 : 45 PM Insti t utional lockdown f or count . 3 : 57 PM +l ; I / M icb)(6); (b)(7)(C) I 3 : 58 PM I I M rb)(6); (b