May 2, 2009 12:32 pm Swine Flu Closes 3 Local Schools San Diego County health officials have closed three schools because of the threat of Swine Flu, affecting about 5,000 students. US & World Videos 2:56 Bill Walton's best friend and former broadcast partner talks about Walton's NBA legacy 2:50 Carlsbad house fire victim may have died trying to save his dogs 2:18 Remembering basketball legend and San Diego native Bill Walton 3:56 New documentary pays tribute to Blue Angels 2:11 Victims of January storms return to their homes in National City