Hendricks County, Johnson County, Hancock County, Shelby County, Boone County, Morgan County all on SAFE-T. Marion County, Hamilton County, Madison County on IDPS. For some incidents, Hendricks and Marion do dispatch some of each others units on both systems for mutual aid. 7FIRE53D is used sometimes for local mutual aid with IFEMS, 7TAC71D is used by Johnson County for local on scene ops sometimes. On the VHF side for Tactical/Firegrounds : Johnson County - 159.1500 NXDN RAN 42. Morgan County - 151.3475 NFM 114.8 CTCSS. There are also VHF Dispatches in use for all EXCEPT Marion County. SEALS Ambulance is paged and has response (transport notification) on SAFE-T, but their Main Dispatch is on the ERS-OCI Con+ system.