Presentation on the OMG Data-Distribution Service (DDS) Interoperability demo held during the Santa Clara OMG meeting on December 8, 2010. Four vendors demonstrated the wire-protocol interoperability of their DDS Implementations: RTI, PrismTech, Gallium Visual Systems, and Twin Oaks Computing. This is a demonstration of the use of the DDS Interoperability Wire Protocol standard (DDS-RTPS)