What are emergency services like in Missouri?

"In Missouri, emergency services are available 24 hours a day, 7 days a week. To call for an ambulance, you can dial 911 from any phone. The operator will ask for your location and the nature of the emergency, and will then dispatch an ambulance to your location. Emergency services in Missouri are provided by a variety of organizations, including fire departments, police departments, and private ambulance services," explained one expat living in Missouri.