Maeve O'Connell (Dublin Rathdown, Fine Gael) | Oireachtas source

Coming to the training that was mentioned, what is the minimum requirement for people to train to become an air traffic controller? It is a very stressful job. How long does it take to qualify? The different ratings and certifications were mentioned earlier. I assume this applies to every airfield, different zones and so on. How often would they have to be updated and maintained? I am trying to get a feeling for how it works, how people get trained and how they can move from one area to another.