gatt wrote:

Would you describe the ATC at Oskosh as "amateur," "hobbyist," "student,"
"volunteer", "ad hoc"...



The fact that someone earns a living at an activity means they're "a
professional". Even "a professional" can execute the activity in a more
professional or less professional manner.

I've seen this demonstrated nicely @ KDXR on a busy weekend. As I was
handed off from "the PROFESSIONALS" @ BDL approach to "the professional"
@ DXR tower, the difference was very clear. One individual was top
notch, fully on top of his game, and very "professional", while the
other should have been fired, as he let his Delta airspace degrade to a
very busy CTAF.

Any more hairs to split? G