180406-N-XC372-1051 SOUTH CHINA SEA (April 6, 2018) The aircraft carrier USS Theodore Roosevelt (CVN 71) leads a formation of U.S. and Republic of Singapore navy ships during a photo exercise in the South China Sea. Theodore Roosevelt is underway for a regularly scheduled deployment in the U.S. 7th Fleet area of operations in support of maritime security operations and theater security cooperation efforts. (U.S. Navy photo by Mass Communication Specialist 3rd Class Anthony J. Rivera/Released)