Having spent over 1000 hrs in the rear seat of a Tornado GR1 (don't even think of calling it the "Fin") I object, most strongly, to numpties calling people like me GIB's. GIB's, Backseaters, WSO's, RIO's, are Spamism's. In general that does not do justice to the role that RAF/RN FJ navigators have carried out/continue to carry out, in numerous RAF/RN 2 seat aircraft, over the the last 30-40 years. I was, like a lot of my generation, a NAVIGATOR first and foremost and mighty proud of that fact! The fact that I wasn't the best or most natural the world has ever seen is neither here or there. I was trained properly and once I got the drift of what was required I was always there for my GIF, stick-monkey or mate and like to think that my imput was important and valued. Some of the best, most natural, leaders I ever came across in 38.5 years in the mob were Buccaneer, F4, GR1 and F2/3 NAVIGATORS-not GIB's or stick monkeys-NAVIGATORS. The odd Vulcan bloke weren't too bad either.
Old bloke moan ON/OFF to OFF.