The Great Round Earth Conspiiracy
This goes for all similar government and civilian occupations.
With great power comes great responsibility. Being in the military requires a lot of work on all human levels, and thus a specific character. There are very few jobs that have transparency of all levels, or handle all data. Though, if you *really* wanted, you could say, look at a brochure or even the recruitment site of each country/branch's websites at all the jobs. I'm not going to go too far into that train of thought, but obviously certain jobs have 'higher transparency' than others; but they either require clearance, rank, or a lot of work in general so you have to balance many different types of knowledge and essentially organize references.
Obviously a good place to start would be airport jobs, IFR/VFR, anything involving boats/ships, lighthouses, radar, landscaping... well, almost anything that requires extensive knowledge/use of geography.
Update Roundy beat me to it, but strange place to ask this :s