Specifications include, but are not limited to: a. Operate x-ray screening machines, and hand-held and walk-through magnetometers (metal detectors) or some combination thereof and screen persons and their possessions for weapons and other unauthorized items. b. Operate a computerized; windows based security software system, closed circuit television monitors, intrusion alarm system, elevator control system, and a computerized fire/life safety system. c. Conduct interior and exterior perimeter security foot patrols of facilities and vehicle patrol of county property. d. Control access to county buildings and property. e. Respond to intrusion detection alarms in county buildings at various sites in the County. f. Evacuate persons from county buildings as directed during emergencies.