Emergency air ambulance regulation?

As helicopter medevac has evolved over the years, it has grown to over 1000 helicopters in the United States and are quite competitive.  At the same time they have become controversial in the consumer arena as patients have later received high medical bills they never expected.   It is ironic that the vehicle that has gone out to save https://experience.tripster.ru/experience/Nizhny_Novgorod/sights/ a life in a critical life threatening situation,  has many times been in an accident.    A conversation needs to take place about how air ambulances are regulated and how to prevent accidents.

See Pdf:  UP-in-the-air- Inadequate-Regulation-for-emergency-air ambulance