Majel Barrett had actually met Babylon 5 producer J. Michael Straczynski at a science fiction convention several months earlier. At the event, a fan suggested she put in a cameo appearance on the show. Straczynski liked the idea, and contacted Barrett to arrange it. Fans interpreted Barret's appearance as a goodwill gesture to attempt to make peace between the rival science fiction television franchises.
This takes place from April 8 to April 10, 2260.