Which type of company includes such units as medical and ambulances or first-response vehicles, and responds to medical or trauma patients?

An EMS company is specifically designed to provide emergency medical services, which include responding to medical emergencies, trauma incidents, and other health-related situations. This type of company is equipped with specialized vehicles such as ambulances and first-response medical units staffed by trained personnel who can administer immediate care to patients.

The role of the EMS company is critical in the emergency response system, as they not only transport patients to medical facilities but also perform life-saving procedures on scene, stabilize patients, and communicate vital information to hospital staff before arrival. The focus of EMS units is primarily on medical emergencies and patient care, which distinguishes them from other types of fire companies that may primarily handle structural fires or rescue operations.

Other types of companies mentioned, like ARFF (Aircraft Rescue and Firefighting) companies, are specialized units focusing on fire protection and emergency services at airports, whereas rapid intervention companies focus on rescuing trapped firefighters. A first-due company typically refers to the first fire company to arrive at an incident, which may involve firefighting efforts rather than directly responding to medical emergencies.