bigwheelzip
Absent Comrade
Products exist to properly secure doors effectively.
As long as emergency egress capability must be maintained, then that pushbar exit door potentially defeats building security every time.
If a threat can get to an outside door or window, anyone on the inside, especially a co-conspirator like at Columbine HS, could provide entry.
The grounds must be secured first, before building occupants can begin to have security.
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