Kaim,
Have a look at the
NATS careers website and also the sticky thread at the top of the foum.
I think what Yahoo was trying to say was that he thinks you should have realised that he is an Air Traffic Control Officer.
Most of us aren't too worried about that, despite it being our official job title. Elsewhere in the world we are referrred to as ATCs. I really wouldn't worry too much, especially given that the NATS website itself refers to Air Traffic Controllers.