In the wake of the devastating shooting at Oikos University in Oakland, hundreds of community members attend an international prayer vigil. Meanwhile, Mayor Jean Quan calls for a renewed effort to curb gun violence and improve access to mental health services. Yahoo hands out pink slips to 2,000 employees, implementing the most significant layoff in the company's history. New CEO Scott Thompson is expected to make further cuts this year as part of a monumental corporate restructuring. Oil giant Chevron is dealt an unexpected blow as the Contra Costa County Assessment Appeals Board slaps an additional estimated $26.7 million in taxes on its Richmond refinery, claiming the property was previously undervalued by the county. As baseball season kicks off the San Francisco Giants sign a record $127.5 million deal with All-Star pitcher Matt Cain and unveil plans for "Mission Rock," a new waterfront development next to AT&T Park.