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Bombings are the most common type of terrorist act. Typically, improvised explosive devices are inexpensive and easy to make. Modern devices are smaller and are harder to detect. They contain very destructive capabilities; for example, on August 7, 1998, two American embassies in Africa were bombed. The bombings claimed the lives of over 200 people, including 12 innocent American citizens, and injured over 5,000 civilians. Terrorists can also use materials that are readily available to the average consumer to construct a bomb.