A scene from a safety video
A safety video was a media file that was played to teach workers how to work safely, especially if they were faced with working conditions with a considerably high hazard level.
In 2383, while Dal was in an elevator taking him into a deep mining zone at the Tars Lamora prison colony, he watched a safety video with the other workers, who were much larger than him. One of the workers with him was Rok-Tahk. (PRO: "Lost and Found")