Welcome Aboard. Hope you enjoy this site.
I’ll bite. What’s a VEMD?
If you can’t Baffle them with Bullxxxt, amaze them with acronyms.
Much like folks who only use airport identifiers in posts.
“So I was flying from CYUY over CYVD then CYQB to …..on and on.”
All great if you are familiar with those but a bit confusing folks from the other side of the world. If needs be they have to look up the codes to get orientated as to continent and city. FYI the codes I mentioned are Rouyn, Val D’or and Quebec City in Quebec, Canada.
Anyhow I found this link which may be of help in answering your question.
https://www.maunaloahelicopters.edu/...D_Training.pdf