Chaps,
Any Navs looking for a long term career could do a lot worse than consider E-3D mission crew. Interesting and very important job, and the requirement to do a year or so down a Fighter Control bunker will hopefully soon be removed for those interested in Weapons Control rather than Surveillance.
We also get a galley although we unfortunately have to live in tents these days as well!
Generally, I suspect that 'Mission Crew' roles for Nav/WSO's will increase in importance due to E-3D, Nimrod R1 and ASTOR over coming years.
Regards
M2