U.S. sailors aboard the USS Underwood (FFG 36) stand at parade rest after firing the 40 mm saluting battery as the guided missile frigate approaches the port of Callao, Peru, May 12, 2012. Underwood was deployed to Central and South America and the Caribbean in support of Southern Seas, a U.S. Southern Command-directed operation designed to strengthen relationships with regional partner nations and improve operational readiness for all assigned units. (U.S. Navy photo by Mass Communication Specialist 2nd Class Stuart Phillips)