The great majority medivac services are operations that are privately held. Elderly patients that seek the services of airevac businesses do not want to go by the usual commercial airliners . This is due to the fact that these case patients are in need of a medical staff. People sometimes seek medical air evacuation operations with a insurance case worker. As these cases are unable to go by the usual airliners . That is due to the fact that these are case patients who are dependent on a respiratory therapist , non emergency air ambulance specialists must be used. Outpatients call for medical care while these people fly. There are air ambulance companies that can transport a patient with two hours notice within the United States.