Bob Barnes retired from the Army in 2001 after 32 years of service. He started his career as an Air Defense officer, and among other assignments commanded nuclear custodial units associated with allied Nike Hercules air defense units in Europe. After being selected for the Funded Legal Education Program, he transferred to the Judge Advocate General’s Corps in 1977. His last JAGC assignment was as the Assistant Judge Advocate General of the Army (Civil Law and Litigations). Previous assignments included serving as the Assistant Judge Advocate General (Military Law and Operations); Staff Judge Advocate for Forces Command; Legal Advisor to Joint Task Force-Olympics; Chief, Administrative Law Division, Office of the Judge Advocate General; and Staff Judge Advocate, 9th Infantry Division (Motorized). From 1989-91 he served as the Deputy Legal and Legislative Counsel to the Chairman of the Joint Chiefs of Staff, where his duties included addressing operational and other legal issues during Operations Just Cause, Desert Shield/Storm, and other contingency operations. Following his retirement from the Army, Bob participated in a two-year MIPT-Kennedy School study on balancing security and civil liberties and served as a consultant to the World Bank on ethics and integrity. From 2002-2014, he served as a Senior Policy Advisor for The Nature Conservancy, focusing on environmental security and interagency and public-private collaboration on climate change and other environmental matters with national security implications. He currently also serves as a Senior Fellow at, and member of the Advisor Board of, the Center for Climate and Security, where he provides policy advice on addressing the security implications of climate change.