The initial part is about a year. You go to a training college, where you are taught the basic theories which are used across the world. If you pass that stage – which involves book work and simulator work, visits to airfields, learning about aircraft, airlines, aviation laws – you are sent to a unit for on-the-job experience. That might be a tower where you instruct aircraft to take off and land. Or it might be a radar centre – where I work – where you watch the screens and tell planes where to go, to climb and descend. You train on the job there – that could be anything from six months to another year. So the whole process is about two or two-and-a-half years at the most. It can be a bit shorter than that depending on where you go.