As an ex AAC attached pilot, incipient VRS was demonstrated to me in 1979 during my course at Middle Wallop. As I spent quite a bit of time in the high hover over certain areas of Northern Ireland during my first two year tour, I appreciated the fact I had the knowledge to indentify VRS should I ever get anywhere near it.
It was also demonstrated to me by my Flt QHI in Cyprus in 1981 when flying the Alouette II.
Thankfully, I have never been in the position of having to get out of such a nasty situation!
bondu