Nope, I think he's in the right place.
If I'm not mistaken, he's looking for Airway Heights PD/FD, Medical Lake PD/FD, and Cheney PD/FD, 3 little towns about a half dozen miles west of Spokane.
The RRDB lists 154.72500 as the City of Cheney PD, although I found that the City of Cheney PD has two additional Public Safety licenses,
(callsign KOM855) for frequencies 155.6400, 159.13500, and 159.13500, and
(callsign KWO331) for frequency 155.8800.
I also found a Public Safety license for the City of Cheney FD, using frequency 154.3250,
(callsign WPKF568)
I could only find a couple of things about Airway Heights. The city had one frequency licensed for public safety, but it expired in 2000
(callsign KFA414) .
There is also a Microwave Industrial/Business Pool license for the City Of Airway Heights,
(callsign WPZA421)
I also found the Airway Heights Corrections Center,
(callsign WPGP261) using 866.562 MHz, 867.062 MHz, 867.512 MHz, 868.137 MHz.
Medical lake has a Public Safety Pool license for frequencies 155.0550 and 155.1000,
(callsign KQP824).
Hope that helps!