170106-M-EL431-0230 WASHINGTON (Jan. 6, 2016) Chief of Naval Operations (CNO) Adm. John M. Richardson speaks during the Secretary of the Navy's (SECNAV) farewell parade at Marine Barracks, Washington, Washington, D.C. The parade was held in honor of the Honorable Raymond E. Mabus who was the longest serving Secretary of the Navy since World War I. (U.S. Marine Corps photo by Cpl. Samantha K. Braun/Released)