Cmdr. Michael Sarnowski, Commanding officer of the Coast Guard Cutter Tahoma, is presented with gifts from Columbian naval officials in Cartagena, Colombia for the annual UNITAS exercise Aug. 30, 2018. UNITAS consists of a variety of exercises and 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.