A method of operating a security system with deterrent capability is implemented through security cameras that are articulated and non-articulated, entry doors, and a control unit. The control unit is communicatively coupled with the security cameras and the entry doors as the control unit is supervised by a trained operator. The security cameras continuously send audio and video data to the control unit so that a threatening target can be identified before he or she can do any destruction. When the threatening target is identified, the entry doors are locked and electrified through the control unit in order to provide an initial defense system for the threatening target. Additional deterrence can be implemented at the threatening target through a less-lethal deterrence unit and non-lethal deterrence units of the articulated security cameras while the non-articulated security cameras provide surveillance of the threatening target to the control unit.