Some doctors are questioning the usefulness of helicopters. Have you heard this ? Originally, civilian medical helicopter service was launched to address serving the needs of the critically injured in rural areas where appropriate medical intervention was essentially non-existent.  It was estimated that 250 medical helicopters could serve the needs of the country. Now, there are 850 medical helicopter services.  Today, many medical helicopters are located in cities where they may not in fact be the fastest way to get the critically injured into a trauma center. There may be the difficulty of landing safely. Further, an ambulance may be a faster way to go.  Is the proliferation of medical helicopter services really justified? Can you give comment regarding this issue?