Methinks that there is a bit of a misunderstanding among us.
I agree that Maddog opened the thread and that was the lead that I was following.
As one in the know, I will state that there are more experienced investigators working in the industry outside the AAIB and the NTSB then within.
In spite of the known fact that the investigators within these organizations are top notch and their jobs aspire to, there are indeed more opportunities available to trained investigators in the aviation industry.
The majority of the students that pass through my Accident Investigation course do not work for either the AAIB or the NTSB, nor are they seeking employment. They are enhancing their credentials in order to serve as reviewers of reports or in some cases to participate alongside the government investigators.