Flying Bull, used the PNG once or twice as an Aircrewman on Scout, then moved onto the counterweighted ANVIS (still got the lead weight somewhere) with the fiddly little cells (kept two spares in those handy little earplug capsules). We had the luxury of a large amount of real estate east of Detmold where we were cleared down to GL. I don't envy anyone who has to try NVG without mounting them on a bone-dome.
Lynx - the British Army's finest anti-submarine helicopter!