From left, Michael O'Hanlon, Secretary of the Navy Ray Mabus, and Chief of Naval Operations Adm. John M. Richardson listen to Commandant of the Marine Corps Gen. Robert B. Neller, during an event with the Center for 21st Century Security and Intelligence at the Brookings Institution, Washington, D.C., Feb. 26, 2016. Mabus, Richardson, and Neller discussed the future maritime concepts, strategies and technologies with O'Hanlon as the moderator. (U.S. Marine Corps photo by Staff Sgt. Gabriela Garcia/Released)
<br>Unit: HQMC Combat Camera
Staff Sgt. Gabriela Garcia
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