161118-N-PO203-426 WASHINGTON (Nov. 18, 2016) The Hon. Sean Stackley, assistant secretary of the Navy (research, development and acquisition), offers remarks during a change-of-command ceremony where Rear Adm. David J. Hahn relieved Rear Adm. Mat W. Winter as the chief of naval research (CNR). Winter, a decorated aviator with advanced degrees in both computer science and national resource strategy, will be joining the F-35 Joint Program Office as deputy director, Joint Strike Fighter Program. Hahn, a decorated submarine commander and naval acquisition officer, will head the Office of Naval Research (ONR) and oversee the roughly $2 billion Department of the Navy budget for naval science and technology programs. (U.S. Navy photo by John F. Williams/Released)