As Special Counsel Robert Mueller prepares to testify in front of Congress the week, Katie and Joe previewed his testimony with National Security expert Jeremy Bash in last week's episode.Some things are worth repeating. So in case you missed this important preview, here it is again.From 2009 to 2011, Jeremy served as Chief of Staff at the CIA under Director Leon Panetta and from 2011-2013 as Chief of Staff at the Department of Defense under then Secretary Panetta.A graduate of Georgetown and Harvard Law School Jeremy was the policy director for national security issues 2000 Gore-Lieberman Campaign and also served as the Chief Minority Counsel for the House Intelligence Committee under Ranking Member Congresswoman Jane Harman.