b) The controller THINKS he knows where everyone is.

The controller get his information from the pilots. Pilots are frequently
not where they THINK they are and provide bad information to the
controller.

Sorry, Steven -- I didn't mean to imply anything else.

That's exactly what I meant.
--
Jay Honeck
Iowa City, IA
Pathfinder N56993
www.AlexisParkInn.com
"Your Aviation Destination"