As America marks the one-year anniversary of the Boston Marathon bombings, look back at the history of terrorist attacks on home soil.
"Unabomber" Theodore Kaczynski killed three people and injured another 23 with his home-made bombs between 1978 and 1995. He was captured at his remote cabin outside Lincoln, Mont., on April 3, 1996. Combing his cabin, FBI investigators found a wealth of bomb components, 40,000 handwritten journal pages that included bomb-making experiments and descriptions of the Unabomber crimes; and one live bomb, ready for mailing.
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