Fleitz, who joined the administration in the summer of 2018, returned to the Center for Security Policy in November, 2018 as the group's President. He worked at the conservative think tank as senior vice president for policy prior to leaving for the NSC post. Fleitz returned as president and CEO of the Center for Security Policy starting in January 2019, according to the think tank. His first day back at the organization, however, was November 1 -- one day after he officially left the White House, according to a senior administration official. He served for 25 years in national security posts with the Central Intelligence Agency, the Defense Intelligence Agency, the State Department, and the House Intelligence Committee staff. In his five years with the House Intelligence Committee staff, Fred was a senior aide to Chairman Peter Hoekstra and the committee’s expert on the Iranian and North Korean nuclear programs. Bolton brought in several staffers after he became President Donald Trump's national security adviser in May 2018. Fleitz, who also served as Bolton's chief during the Bush administration, is the first of Bolton's senior hires to leave the council.