Update at 11:22 a.m.: A hike of 2,311 acres overnight on the Gann Fire brings the total acreage to 9,363 acres. Update at 10:35 a.m.: CAL FIRE incident command reports on how crews will attack the Gann Fire today, working to get a handle on the blaze. Update at 7:32 a.m.: Due to the Gann Fire, all Calaveras Unified School District schools are closed today. As wind patterns continue to change, air quality conditions may fluctuate throughout our district. Update at 7:20 a.m.: CAL FIRE reports progress this morning on the Gann Fire burning in the Valley Springs area of Calaveras County.