Defense Secretary Ash Carter announces the choices of Navy Adm. John M. Richardson, left, as the next chief of naval operations and Army Gen. Mark A. Milley as the next Army chief of staff during a press briefing at the Pentagon, May 13, 2015. Defense Secretary Ash Carter announces the choices of Navy Adm. John M. Richardson, left, as the next chief of naval operations and Army Gen. Mark A. Milley as the next Army chief of staff during a press briefing at the Pentagon, May 13, 2015. SHARE: Download: Full Size (0.8 MB) Tags: Photo Essays Credit: VIRIN: 947383-X-MNI25-510.jpg Photo Gallery