I can't imagine the same agency trying to use those two channels just 5 kHz apart with FM (wideband) modulation. 154.5900 is an invalid channel and not licensed to anyone in ULS***. Looking at the descriptions, if JCSO-TALK is supposed to be talk-around for the Sheriff dispatch repeater on 158.7900. Would someone local comment/research please?
***N.B. Please see note on the about tab of my user page regarding unlicensed usage.