US Navy 101116-N-3666S-096 The guided-missile destroyer USS Russell (DDG 59) fires its 5-inch-54 caliber Mark 45 lightweight gun

PACIFIC OCEAN (Nov. 16, 2010) The guided-missile destroyer USS Russell (DDG 59) fires its 5-inch/54 caliber Mark 45 lightweight gun during exercise Koa Kai off the coast of the Hawaiian Islands. Koa Kai is the primary integrated training event for Mid-Pacific surface combatant units designed to achieve deployment certifications and training. (U.S. Navy photo by Mass Communication 2nd Class Robert Stirrup/Released)