Foster--
You are correct. They have 460.375MHz and 158.730MHz linked together. This is the Police Command Post frequency.
I have not heard them this year, but EMSA usually uses a side channel at the fair. Last year, I believe they were on Turnpike (463.000MHz) simplex. You might listen to all the Med channels if you don't hear them there.
The Fire Department usually stays on the main dispatch channel. Today that was Channel 3 (453.600MHZ).
In the past, the Fair folks had a couple of UHF repeaters (464.something, if I remember right) however, this year I noticed the administration folks were running around with (gasp) NexTels.
--FAST 2