An "open" sign hangs precariously behind a shattered glass window at a shoe store in downtown Calexico, California, following a 7.2 magnitude earthquake, April 4, 2010. A major 7.2 magnitude earthquake struck near the Mexico-California border on Sunday, killing at least one person as it rocked buildings, ruptured a highway and panicked residents from Tijuana to Los Angeles. REUTERS/Fred Greaves (UNITED STATES - Tags: DISASTER IMAGES OF THE DAY)