Occasionally there are victims of major illnesses that hire medical flight specialists since they are severely afflicted though they are in medically stable circumstance. What is more , private air ambulance charters are usually contracted because they cannot be transported by the normal air charter services. Not often there are case patients that need medical aid : and consequently they are not good to go by public air travel charters. Now that then there are med flight specialists which transfer patients between hospitals all over the US. Medevac crews sometimes can be found by clients with a trained case worker.