Keywords: US Navy 110415-N-ZB612-479 Chief of Naval Operations (CNO) Adm. Gary Roughead signs the guest book of the Russian Federation Navy nuclear-powered c.jpg en SEVEROMORSK Russia April 15 2011 Chief of Naval Operations CNO Adm Gary Roughead signs the guest book of the Russian Federation Navy nuclear-powered cruiser Pyotr Velikiy 099 during a visit to the Russian Northern Fleet region in Severomorsk Russia U S Navy photo by Chief Mass Communication Specialist Tiffini Jones Vanderwyst/Released 2011-04-15 110415-N-ZB612-479 Navy http //www navy mil/view_image asp id 100042 U S Navy photo by Chief Mass Communication Specialist Tiffini Jones Vanderwyst PD-USGov-Military-Navy Images from US Navy location SEVEROMORSK Russia Gary Roughead in 2011 Photographs taken on 2011-04-15 April 2011 in Russia Pyotr Velikiy ship 1996 Guestbook signing |