U.S. Navy Machinist's Mate 1st Class Jesse Hinojosa prepares an oil sample for a viscosity and sediment test in the oils lab aboard the amphibious transport dock ship USS San Antonio (LPD 17) Aug. 13, 2013, in the Gulf of Aden. The San Antonio and the embarked 26th Marine Expeditionary Unit were deployed as part of the Kearsarge Amphibious Ready Group in support of maritime security operations and theater security cooperation efforts in the U.S. 5th Fleet area of responsibility. (U.S. Navy photo by Mass Communication Specialist 3rd Class Lacordrick Wilson/Released)