150408-N-IC565-018 SAN DIEGO (April 8, 2015) Quatermaster Seaman Dimitri Walker monitors surface contacts from the bridge during sea and anchor detail aboard Wasp-class amphibious assault ship USS Essex (LHD 2). Essex is underway participating in a certification exercise with the Essex Amphibious Ready Group. (U.S. Navy Photo by Mass Communication Specialist 3rd Class Bradley J. Gee/Released)