Emergency Alert System. When the call button is pressed, an alarm signal is sent to the control panel in your home, which automatically calls Great Plains Security Monitoring Center. The dispatcher will follow your predetermined instructions and within minutes a family member, friend, neighbor, or 911 emergency responder is on the way. This is a statewide service. Great Plains Security works with the County Social Services. Call your local county social services to see if you qualify for payment assistance. Monitored Security Systems and Video Surveillance systems. Great Plains can also help protect your home from burglary, freeze up, and water damage.