Thank you again, heights good and VM325.
Scan/read since I have no experience of Chinook or NVGs. While whole body fatigue was very much a feature of S&R instucting (in the mid 1960s), I don't recall any specific neck-related issues.
It would seem reasonable to assume that adding
any item of significant mass to the human frame would induce an accompanying muscle/nerve impact, with the effects being proportionate to the forces/ exposure times experienced.
My present-day neck discomfort owes much to anno domini !
