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Brain Wars: Jose Barco
1m 36s
Despite brain trauma, he pestered his doctors to declare him fit for duty
FRONTLINE explores and illuminates the critical issues of our times - from business and health to social issues, politics and war.
Video description: "PBS Newshour" correspondent Hari Sreenivasan, reporting for FRONTLINE, goes deep inside the Romney and Obama campaigns to uncover how data collected from millions of Americans is being used by both camps to target their messages, get out the vote and shape the election.
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