Its unfortunate. SLERS markets itself as "interoperability" but it takes a a small army of people to make it happen. I have been involved in incidents where a P25 Fire Department was assisting with a SLERS Fire Department and had to patch via the FIN network. It took 30mins to get everyone on the same channel and to get the dispatch centers on the same page. And because the 8tac91 site was not on the closest tower, the coverage was horrendous. Not to mention the link audio was crap.