

A massive fire roars through a mostly residential neighborhood in San Bruno, Calif., on Sept. 9. Firefighters from San Bruno and surrounding cities are battling the blaze that started on a hillside. Paul Sakuma/AP
A ball of flames and smoke are seen in San Bruno, Calif., on Sept. 9. Several homes were destroyed as a massive fire roared through a mostly residential neighborhood in San Bruno. Stephanie Mullen/AP
A massive fire roars through a mostly residential neighborhood in San Bruno, Calif., on Sept. 9. Paul Sakuma/AP
A massive fire roars through San Bruno, Calif., on Sept. 9. Jeff Chiu/AP
Firefighters from San Bruno and surrounding cities are battling the blaze that started on a hillside and is now consuming homes in a residential neighborhood in San Bruno, Calif. Jeff Chiu/AP
Firefighters battle a fire possibly resulting from a high-pressure gas line explosion in San Bruno, Calif., on Sept. 9. Karl Mondon/Bay Area News Group/AP
Firemen help a woman after an explosion in San Bruno, Calif., on Sept. 9. Mike Adaskaveg/AP
A 'home for sale' sign is shown in front of a house that was destroyed by the San Bruno fire on Sept. 9. Paul Sakuma/AP
Firefighters fight a massive fire in a residential neighborhood in San Bruno, Calif., on Sept. 9. George Nikitin/AP
Firefighters shoot water from their firehoses as they try to control the flames from a fire in San Bruno, Calif., on Sept. 9. George Nikitin/AP
A helicopter drops water on a fire in San Bruno, Calif., on Sept. 9. Paul Sakuma/AP
Fire roars through San Bruno, Calif., on Sept. 9. Paul Sakuma/AP
Jaime Molina (r.) puts a blanket around his daughter Jazmin as his wife Esmeralda (l.) and their son Danny (foreground) wait in an area where evacuees gathered in San Bruno, Calif., on Sept. 9. Jeff Chiu/AP
A massive fire, which started on a hillside, roared through San Bruno, Calif., a mostly residential neighborhood, after a loud explosion Thursday evening that shot a fireball more than 1,000 feet into the air. Jeff Chiu/AP
San Bruno fire chief Dennis Haag speaks to news reporters on Sept. 9. Jeff Chiu/AP
A helicopter drops water on a fire after an explosion in San Bruno, Calif., on Sept. 9. Mike Adaskaveg/AP