How recent would NVG experience need to be to be acceptable to instruct in civ sar world? I know unless in date you can’t be an IRI or TRI so would NVGI require currency? How recently experienced are those on offer or this person who didn’t hang around? The accident report will doubtless be damning, how well are they risk assessing NVG intro given the mess made of S92 intro and apparent contempt for the advice given and offered by experienced S92 SAR personnel to those who at the time were new to type?