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Admiral Mike Mullen, Chairman of the Joint Chiefs of Staff | Bio
Mayor Mike Bloomberg (I), New York City | Bio
Alan Greenspan, Fmr. Federal Reserve Chairman | Bio
Gov. Ed Rendell (D-PA), Fmr. Chair, Democratic National Committee | Bio
Doris Kearns Goodwin, Presidential Historian | Bio
Mark Halperin, Senior Political Analyst, msnbc; Editor-at-Large & Senior Political Analyst, TIME; co-Author, “Game Change: Obama and the Clintons, McCain and Palin, and the Race of a Lifetime” | Bio