180911-N-GX781-0031 CARTAGENA, Colombia (Sept. 11, 2018) Colombian Naval Band members play during the closing ceremony of UNITAS 2018. UNITAS is an annual international exercise in the U.S. Southern Command area of responsibility where partner nations participate in multinational exchanges to enhance interoperability, increase regional stability, and build and maintain regional relationships with countries throughout the region through joint, multinational and interagency exchanges and cooperation. (U.S. Navy photo by Mass Communication Specialist 3rd Class Colbey Livingston/Released)