The ambulance blares its siren and lights down the road while cars move out of the way to let it get to the emergency scene as soon as possible! The paramedic and EMT are highly trained and capable medics that have the knowledge to save anyone who is still clinging to life. They genuinely care for peoples lives and have picked a high-stress career so they may save people from dire conditions.
They are in charge of getting patients to a state of homeostasis. They need to get them to the hospital and a doctor with whatever medical condition they have as soon as possible! The ambulance is equipped with life supporting equipment so the patient is cared for one the way to the hospital on the stretcher that goes into the back of the vehicle.