I think this may have been mentioned before, but thought I'd bring it up again as a reminder. The identifier for the regional mutual aid areas have been (or will be soon) reconfigured. Here's a link to the new map:
http://www.in.gov/ipsc/images/mutual_aid_P25.pdf
Jeff.
http://www.in.gov/ipsc/images/mutual_aid_P25.pdf
Jeff.