Just to add, that it is possible to get into Airfield ops without previous experience but obviously it helps. The training that has now evolved is pretty comprehensive. The difficulty you will have is finding any vacancies. As the Job is well paid (Well it is here!!
) and more secure than most, people rarely leave so vacancies usually only occur due to promotions etc.
Apart from that 42psi gave you some good advice..Good luck and I hope his PM bears some fruit..
