Photo - Seven-year-old Joey Bell helps clean out her mother's earthquake damaged hair salon as Stephanie Killingsworth, right, looks on Tuesday, Aug. 26, 2014, in Napa, Calif. The building that housed the salon was declared unsafe and red tagged. The earthquake that jolted California's wine capital may have caused at least $1 billion in property damage, but it also added impetus to the state's effort to develop an early warning system that might offer a few precious seconds for residents to duck under desks, trains to slow down and utility lines to be powered down before the seismic waves reach them. The magnitude-6.0 quake struck early Sunday near the city of Napa. (AP Photo/Eric Risberg)