Small world, I work for the US DOT and most of my career has been supporting the FAA, and I've had some exposure to HEMS.
My group was responsible for creating the electronic MMEL's and the FSIMS system for the FAA Flight Standards ASI's
HEMS is tough and dangerous work. A truly noble profession.
Kudos for making 18 years in the air, that is an amazing record.
I cant imagine what you have seen and experienced and suffered through over the years.
Many Thanks for you service, it is truly one of the under-recognized public services that few think about, but when you need it, it is a life saving godsend.
ATB