150220-N-LV331-002 - WASHINGTON (Feb. 20, 2015) Secretary of the Navy (SECNAV) Ray Mabus presses a button to fire a round out of a railgun from a control room at the Naval Research Laboratory. During his visit, Mabus spoke with project experts and observed ongoing innovations to electronic warfare systems, anti-submarine warfare projects and autonomous systems. ( Navy photo by Mass Communication Specialist 2nd Class Armando Gonzales/Released) Naval Research Laboratory 150220-N-LV331-002

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Keywords: armed, conflict, forces, military, states, united, war