First Responders are usually police officers and firefighters who are first to arrive at the emergency scene. They assist emergency victims until EMS arrives, and are often trained as EMTs or paramedics. Emergency Medical Technicians , or EMTs, have various levels of training. Some EMTs drive the ambulance, assist with rescues and perform basic emergency care. Other EMTs are emergency dispatch operators who send ambulances and emergency vehicles to the emergency scene.
Paramedics are EMTs with the highest level of training.
They perform medical procedures at the scene of the emergency or in the ambulance on the way to the hospital. Using a radio to communicate, paramedics often get instructions from physicians. Emergency Nurses are specially trained to help and treat emergency patients. Emergency Physicians are doctors who specialize in treating people who are seriously injured or who have become sick very suddenly, such as heart attack victims.