In early 2373, Benjamin Sisko was given four polaron emitters (prototype X-47) to take with he and his team on a mission to Ty'Gokor to expose Chancellor Gowron as a Founder. In order for the devices to work, they all had to be activated at the same time. General Martok recognized Sisko as he was receiving his medal from Gowron and the Starfleet team were exposed. The Martok Changeling later had the emitters destroyed. (DS9: "Apocalypse Rising") Dave Rossi was seen with one of the polaron emitter props in the documentary Star Trek: Beyond the Final Frontier.