Reluctant as I am to correct such a highly experienced (and venerable
) navigator as
PN, I think the correct term for the guys that sat in the back of Javelins was Radar Observer. These chaps wore the 'RO' brevet, which had first been introduced during WW2, and which is frequently misidentified as 'Radio Operator', an aircrew category which never existed under that name. The scheme was fairly short lived, and those who could pass the nav course were reclassified as navigators and switched to the 'N' brevet