When the discussion came to inserting the "DS9" crew into the bar-brawl scene, Berman liked the idea but was unsure if it could actually be done. Visual effects supervisor Gary Hutzel created test footage and screened it for Behr and Moore, who thought that it was simply footage from the original episode. Once Hutzel revealed that an additional security officer (played by visual effects camera operator Jim Rider) had been seamlessly added to the sequence, the episode was green-lit. During the scripting process, "The Trouble with Tribbles" was regularly consulted, so the writers could decide where to insert characters. The Temporal Agents, Dulmer and Lucsly, were so named as they were anagrams of Mulder and Scully from "The X-Files".