EAST CHINA SEA (Dec. 5, 2010) - Aerographer's Mate 3rd Class Ryan Vaughan, left, and Aerographer's Mate 3rd Class Jason Fisher run diagnostics on a remote environmental monitoring unit (REMUS 100) aboard the amphibious transport dock USS Denver (LPD 9). The REMUS 100 is an unmanned undersea vehicle (UUV) that is used for mine detection. These operations mark the first ever launch of a UUV from an amphibious transport platform ship. Denver is part of the forward-deployed Essex Amphibious Ready Group and is underway participating in Keen Sword 2010, a joint force exercise with the Japanese Maritime Self-Defense Force.