If it happened the FCC doesn't know anything about it. I checked the last 50 licenses for Pike County, and the closest thing is a bunch of 800mhz SMR trunking frequencies assigned to the southern company, which is SouthernLinc
http://www.southernlinc.com/
Nothing listed in the FCC ULS for 900mhz and nothing listed in 800/900 mhz for public safety. Have you tried doing a search in the 900mhz range to see if you hear anything?
Where did you get your information from????????
It might be possible that the person telling you that meant that Pike County SO is patched in with the MSWIN system which is the new statewide 700mhz digital system. They have towers being built all throughout the state, and the primary users will be state agencies like MHP and so forth, but they're making sure that cities and county agencies will have access too. They could very easily patch a vhf frequency onto a talkgroup to link to state agencies.