He started training as a pilot and then changed to navigator. Having been a QWI on both ground attack and air defence F4 he restarted his pilot training eventually becoming combat ready on the Vulcan for more than the required 6 months to retain his pilot's brevet (not badge.) His subsequent fast jet cross over ended up in restreaming (medical I understand, but I could be wrong) as a navigator where he took up QWI duties again, this time on the Tornado, both ground attack and air defence.