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Photo by: MARK LENNIHAN

**FILE** FBI agents and New York state police guard the reconstruction of TWA Flight 800 in Calverton, N.Y., on Nov. 19, 1997. Flight 800 exploded and crashed July 17, 1996, while flying from New York to Paris, killing all 230 people aboard. An FBI investigation has concluded that there is no evidence that the crash was the result of a criminal act. (Associated Press)

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