Communications Dispatchers operate radios and other telecommunication equipment to dispatch emergency vehicles and to co-ordinate the activities of drivers and other personnel. Police, Fire and EMS departments, other emergency service agencies, taxi, delivery and courier services, trucking and utilities companies and other commercial and industrial establishments employ them. Radio operators receive, transmit and record signals and messages using radios and other telecommunication equipment. They are employed by transportation companies, mining, forestry and other industrial establishments and by the armed forces.