Rear Adm. David J. Hahn relieves Rear Adm. Mat W. Winter as the chief of naval research (CNR) during a change-of-command ceremony at the U.S. Navy Memorial in Washington, D.C. on November 18, 2016. Concurrent with his duties as CNR, Hahn will also serve as director, Innovation Technology Requirements, and Test and Evaluation (OPNAV-N94).