Those who are arguing for a dedicated radar operator are - or rather were - very capable military SAR operators. Unfortunately, they also have no experience of genuine SAR in a modern civilian setup, so are arguing with knowledge of only one side of the coin. It also is simply not true that tech crew cannot provide navigational guidance to pilots; that is exactly what happened pre-NVG at night at low level using the FLIR. Unhelpful, provocative and outdated. It certainly adds nothing constructive to the analysis of this incident, IMHO.