 On September 23, 2011, Greenert became the 30th Chief of Naval Operations, succeeding Admiral Gary Roughead.On March 3, 2016, the National Bureau of Asian Research announced that Greenert would become the third holder of the John M. Shalikashvili Chair in National Security Studies (Shali Chair) at NBR.At NBR, Greenert brings to bear his years of experience in the U.S. Navy to help inform policy debates on critical issues pertaining to the Asia-Pacific through briefings of senior leaders, and research and writing.