This document provides information about earthquake preparedness and safety. It defines earthquakes and aftershocks, lists associated hazards like fires and landslides, and notes increasing earthquake activity in San Diego County. It offers tips for being prepared like securing heavy objects, identifying safe places to take cover, learning how to shut off gas, and developing a communication plan. Specific guidance is given on checking for hazards, using safe positions during shaking, what to do after an earthquake like checking for fires and injuries, and activating emergency plans. Interactive elements test the reader's knowledge of identifying hazards and safe positions to take during an earthquake.