For anyone interested here is a link to an online live fire/rescue scanner for Lake County, FL. If it doesn't work, let me know and I'll try to help.
http://www.radioreference.com/apps/a...n=cwp&ctid=350
Also, Marion County has this scanner display on the county website. Very cool.
Sumter County doesn't have any live scanner feeds that I can find anyway.
http://www.marioncountyfl.org/firecalls/Firescan.aspx