As as lad I can recall messing about with such things in the early 80's - my old boy, a
boffin with Ferranti in Edinburgh, let me try out the NVGs he'd been using for the Harrier Nightbird programme. My recollection is of standing in the dark-room at his work and making impolite gestures towards him, only inches from his face. Needless to say he was none the wiser, hence I could continue to sit down in comfort for the next two weeks.
