Police and fire<unk> s responding to a traffic accident in Ohio Emergency telephone in New York City<unk> s and rescue<unk> s are organizations which ensure public safety and health by addressing different emergencies. Some of these agencies exist solely for addressing certain types of emergencies whilst others deal with ad hoc emergencies as part of their normal responsibilities. Many of these agencies engage in community awareness and prevention programs to help the public avoid, detect, and report emergencies effectively. There are three primary<unk> s that can be summoned directly by the public: * Police — law enforcement, criminal investigation, and maintenance of public order. There are a variety of law enforcement agencies that conduct law enforcement. In the United States, there are State Police and Highway Patrol agencies, Municipal and County police and Sheriff agencies as well as other law enforcement agencies. * Fire and Rescue<unk> s — fire suppression, technical rescue, and hazardous materials mitigation. These<unk> s are provided to those who need help during any type of emergency. Some Fire and Rescue<unk> s agencies also provide emergency medical<unk> s. * EMS or Ambulance — emergency medical<unk> s and technical rescue. Emergency Medical<unk> s agencies and Technical Rescue<unk> s agencies are responsible for immediate response to medical emergency calls as well as specialized rescue<unk> s calls. Many emergency medical<unk> s agencies in the United States operate technical rescue<unk> s vehicles and equipment and work to help those who need rescue assistance.<unk> s have one or more dedicated emergency telephone numbers reserved for critical emergency calls. In some countries, one number is used for all the<unk> s (e.g. 911 in the Americas, 999 in the UK, 112 in continental Europe, 000 in Australia). In some countries, each<unk>  has its own emergency number. Some fire departments provide emergency medical<unk> s along with their primary<unk> s. The availability of<unk> s depends very heavily on location, and may in some cases also rely on the recipient giving payment or holding suitable insurance or other surety for receiving the<unk> .
Emergency service
Hospital NEO
Emergency medicine
Hospital
Neurohospitalist
Pre-hospital emergency medicine
Emergency medical dispatcher
Outline of emergency medicine