Hi
I would just point out that I first flew a Sea King 3 on NVG in autumn 1982 (circuits to a man with a cigarette in the middle of Chetwynd), in preparation for a det to 51S 58W or thereabouts.
Sven
edit to add
We probably were putting lives at risk - we just hadn't figured all the hazards. I guess we were lucky. Over time you learn (and you get better goggles). The trick is then that others take your experience and move on.