The Department of Emergency Management operates San Franciscoβs 9-1-1 Call Center and Computer Aided Dispatch (CAD) System which manage all emergency (Police, Fire, Medical) incidents that occur in San Francisco. DEM processes over 1.2 million calls per year, on emergency 9-1-1 and non-emergency lines and via land-line, cell phones and texts. All calls made to the 9-1-1 center are recorded, and all emergency calls and most non-emergency calls are logged in the CAD System that DEM maintains as CAD records. These calls result in a little less than 1 million separate CAD records, as sometimes multiple calls are combined into the same record and some non-emergency calls do not result in a record.