150414-N-PO203-264 NATIONAL HARBOR, Md. (April 14, 2015) Brig. Gen. Kevin J. Killea, vice chief of naval research and commander of Marine Corps warfighting lab, joins Rear Adm. Mat Winter, chief of naval research, for a panel titled, The Unmanned Vehicle Race: Where are We Headed?, during the Navy League's 50th annual Sea-Air-Space Exposition. (U.S. Navy photo by John F. Williams/Released)