Over 120 Fresno County firefighters helping battle the 'Gann Fire'As more than 3,100 Cal Fire personnel fight the "Gann Fire" in Calaveras County, over 120 firefighters from Fresno County are doing their part. As more than 3,100 Cal Fire personnel fight the "Gann Fire" in Calaveras County, over 120 firefighters from Fresno County are doing their part. As more than 3,100 Cal Fire personnel fight the "Gann Fire" in Calaveras County, over 120 firefighters from Fresno County are doing their part. As more than 3,100 Cal Fire personnel fight the "Gann Fire" in Calaveras County, over 120 firefighters from Fresno County are doing their part. FRESNO, Calif. (KFSN) -- As more than 3,100 Cal Fire personnel fight the "Gann Fire" in Calaveras County, over 120 firefighters from Fresno County are doing their part.