June 5, 2009 3:58 pm Underground Explosion Sparks Manhole Fire Flames and thick black smoke jumped two stories in the air Friday afternoon in San Francisco’s Tenderloin District. US & World Videos 2:30 In the news: Curry discusses legacy of 3-point shot, Bay Area native behind ‘Wicked', flood watch 2:49 In the news: Bay Area storm, third deadly boating incident, America's best companies 2:24 In the news: DA Pamela Price concedes, San Mateo County sheriff controversy, Bob Lee murder case 2:22 A closer look: Prematurity awareness 8:54 Mac and cheese millionaire