From time to time there are injured people that are unable to be brought on the everyday airplanes . This is when these men or women would be designated as being not in medically self sustaining circumstance, so medical flight crews reserve and set up a flight with them. There are patients that have need of specialized surgery while they fly. As these people have to be transported to a better hospital and are for emergency situations , medical flight companies have to be contracted. The majority of air evacuation services are considered to be business organisations that are privately owned. air ambulance service olympia washington frequently are researched by families of patients with the help of the yellow pages. There frequently are medical flight operations which exist in any place on earth.