Good to see you back again, Darwin. I recently read a book by a pilot who described a landing in zero visibility. The GIB used his look down camera to get them centered over the stripe on the runway.
Thanks for the comment. What book were you reading for that comment on 0/0 landing? I have heard that before and I think that it is an old wives' tale. The SR-71 was NOT authorized to make zero visibility landings and there is NO camera with a real time readout to give the capability to do something like that. The RSO does have a viewport that works kind of like a periscope that looks down. It is strictly visual and if the pilot cannot see forward, then that thing cannot see down either.
Darwin