to him on the occasion of his retirement. Post-army career and later life Sullivan is the co-author, with Michael V. Harper, of Hope Is Not a Method (Random House, 1996), which chronicles the enormous challenges encountered in transforming the post-Cold War army through the lens of proven leadership principles and a commitment to shared values. Sullivan served as the chairman of the board of trustees of Norwich University, the Army Historical Foundation, and the Marshall Legacy Institute, as well as a member of the MITRE Army Advisory Board, the MIT Lincoln Laboratory Advisory Board, and a Life Trustee of the Woods Hole Oceanographic Institute. He was also the President and Chief Executive Officer of the Association of the United States Army, headquartered in Arlington, Virginia from February 1998 through June 2016. Sullivan is an Advisory Board Member of Spirit of America, a 501(c)(3) organization that supports the safety and success of Americans serving abroad and the local people and partners they seek to help. In recognition of his military career and his work with AUSA, Sullivan was awarded the prestigious Sylvanus Thayer Award by the United States Military Academy in 2003, and the AUSA General George Catlett Marshall Medal, the Association's highest honor, in October 2016. CNA Military Advisory Board Gen. Sullivan served as the first Chairman of the CNA Military Advisory Board, the first group of retired generals and admirals to examine the national security implications of climate change. Founded in 2006 by Sherri Goodman, the CNA Military Advisory board brought together military leaders from the United States Army, Navy, Air Force, and Marine Corps. The landmark report of the CNA Military Advisory Board, National Security and the Threat of Climate Change, established the concept of climate change as a “threat multiplier.” General Sullivan stated in 2007 that the time had arrived to end the debate about climate and take action. When asked about the risk he remarked, “We never have 100 percent certainty. We never have it. If you wait until you have 100 percent certainty, something bad is going to happen on the battlefield.” General Sullivan compared the climate and nuclear threats, stating, “Climate change is exactly the opposite. We have a catastrophic event that appears to be inevitable. And the challenge is to stabilize things—to stabilize carbon in the atmosphere. Back then, the challenge was to stop a particular action. Now, the challenge is to inspire