Residents walk net to half-toppled energy posts at the community of Oaxaca, on the outskirts of Mexicali April 7, 2010. Scared families south of the Mexico-California border readied to sleep outside for a second night on Monday after a big earthquake tore cracks in roads and houses and dozens of aftershocks rattled the area. REUTERS/Tomas Bravo (MEXICO - Tags: DISASTER)