150304-N-AC887-002 WASHINGTON (March 4, 2015) Marine Corps Commandant Gen. Joseph Dunford, left, Secretary of the Navy (SECNAV) Ray Mabus and Chief of Naval Operations (CNO) Adm. Jonathan Greenert testify before the Senate Appropriations Committee on Defense on the proposed budget for fiscal year 2016. (U.S. Navy photo by Chief Mass Communication Specialist Sam Shavers/Released)