BLACK RIVER FALLS, Wis. – The arsonist who started 50-plus wildfires un central Jackson County over the past five months has been caught,Daniel Johnson, 44, of nearby Brockway, was in jail, County Attorney Emily Hynek said. The fires, on public and private lands, began in April. The arrest followed a task force investigation by the state Natural Resources Department, the state Criminal Investigation Division, Black River Falls police, the Jackson County sheriff’s office, the Black River Falls Fire Department and the Monroe County sheriff’s office.