More than 5 million Southern Californians, including nearly a million in San Diego and Riverside counties, are poised to take part this week in what is being billed as the largest earthquake drill in U.S. history.
At 10 a.m. Thursday, about 565,000 people in Riverside County and 405,000 in San Diego County plan to drop to the floor at school, home or the office as if a real quake were rocking the region, duck under a sturdy table or desk and hold onto the desk for 1 1/2 minutes.
"You want to hold on," said Sue Perry, staff scientist for the U.S. Geological Survey's Multi-Hazards Demonstration Project in Pasadena, which is helping coordinate the event. "You and the desk could be relocating during the shaking."
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