U.S. sailors participate in a small arms qualification aboard the guided missile frigate USS Underwood in the Caribbean Sea on Oct. 10. Underwood was deployed to Central and South America and the Caribbean in support of Operation Martillo and Southern Seas 2012. Operation Martillo is a joint, interagency and multinational collaborative effort to deny transnational criminal organizations air and maritime access to the littoral regions of the Central American isthmus (Courtesy of U.S. Navy Mass Communication Specialist 2nd Class Stuart Phillips)