Well, there is screening. You have to go to a PSO in order to get a vocational transfer into another occupation. That PSO will in fact have all the psychometric kinds of testing things they do to see what your aptitude is and whether in fact you should go into that trade. They do that.
In the recruiting centres, when you go, you actually do aptitude tests. But a lot of times in the recruiting centres they need so many infanteers, so you may say, “I'd like to go here”, and they'll sort of push you in one direction or another. As with any system, you really have to be willing to fight the bureaucracy a little bit, because that's the way it works.