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Now Playing: A 'Romantic' Date on Death Row
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Now Playing: 'She Squeezes Your Hand'
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Now Playing: Giffords' Stunning Prediction
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Now Playing: As Many Days 'As It Takes'
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Now Playing: Congresswoman and Astronaut
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Now Playing: James Comey Part 6: Comey on a Trump impeachment
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Now Playing: James Comey Part 5: Are there Trump tapes?
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Now Playing: James Comey Part 4: Discussing Michael Flynn
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Now Playing: James Comey Part 3: Trump asks for 'honest loyalty'
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Now Playing: James Comey Part 2: The Hillary Clinton email investigation
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Now Playing: US and allies launch attacks on Syria
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Now Playing: Iran, Russia should not associate with mass murder of innocent people: Trump
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Now Playing: Pentagon officials remark on strikes in Syria
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Now Playing: Strikes will establish a strong deterrent of chemical weapons: Trump
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Now Playing: Couple drugged and blindfolded, and woman abducted in the middle of the night: Part 1
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Now Playing: Couple in so-called 'Gone Girl' case denounced by police: Part 3
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Now Playing: Man who kidnapped woman in so-called 'Gone Girl' case finally caught: Part 4