151013-N-ZI635-173 WASHINGTON (Oct. 10, 2015) Secretary of the Navy (SECNAV) Ray Mabus, Yeoman 1st Class Victoria Alvarez, and Vice Adm. Robert Thomas, director of Navy Staff, cut a ceremonial cake during a ceremony in honor of the U.S. Navy’s 240th birthday in the Pentagon courtyard. (U.S. Navy photo by Mass Communication Specialist 2nd Class George M. Bell/Released)