Booz Allen Hamilton Executive: More Vetting Needed for Federal Contractors

Edward Snowden's former Booz Allen employer calls him the worst security leak in U.S. history.

Mike McConnell, vice chairman of Booz Allen Hamilton,  speaks at Bloomberg Governmen'ts cybersecurit conference in Washington D.C, on Wednesday, Oct. 30, 2013. (Julia Schmalz/Bloomberg via Getty Images)

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