6 user 4 critic

Civil Defense 

The station goes into lockdown and the crew is endangered when an old Cardassian security program is accidentally activated.


Reza Badiyi


Gene Roddenberry (based upon "Star Trek" created by), Rick Berman (created by) | 2 more credits »

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Episode cast overview:
Avery Brooks ... Commander Sisko
Rene Auberjonois ... Odo
Alexander Siddig ... Doctor Bashir (as Siddig El Fadil)
Terry Farrell ... Lieutenant Dax
Cirroc Lofton ... Jake Sisko
Colm Meaney ... Chief O'Brien
Armin Shimerman ... Quark
Nana Visitor ... Major Kira
Andrew Robinson ... Garak
Marc Alaimo ... Gul Dukat
Danny Goldring ... Legate Kell


O'Brien and Jake are preparing one of the old ore processing units to convert it for use as a deuterium refinery. Sisko checks up on them, just as Jake finds a strange file in the database which can't be deleted. O'Brien accidentally trips a Cardassian security alert, and must enter a password, but fails. Suddenly, the room's locked down, and a recorded message from Gul Dukat appears on view screens, warning the 'Bajoran workers' to surrender, or face consequences. But their troubles, and that of the station's, are far from over. Written by Arnoud Tiele (imdb@tiele.nl)

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TV-PG | See all certifications »


Official Sites:

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Release Date:

7 November 1994 (USA) See more »

Company Credits

Production Co:

Paramount Television See more »
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Technical Specs


Sound Mix:




Aspect Ratio:

1.33 : 1
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Did You Know?


This episode had an extremely difficult gestation. According to Ira Steven Behr, "It was one of those back-breaking, horrible, horrible experiences," although he does acknowledge that "it was terrific at the end." The original pitch by Mike Krohn was intended as a bottle show, and while the basic man-against-machine element of the plot was fine, the problem, according to Ronald D. Moore, was in trying to find a way "to make the jeopardy intriguing, to find the inner story." By the time of production, virtually every writer on the staff had had a go at the script, but every single draft was rejected by Michael Piller. According to Behr, Piller called him at 8:00am on a Monday morning to tell him, "I hate to say this Ira, but I'm not buying any of it - it's not working." In the end, after much work, the staff finally got together a script which Piller approved, and the episode was green-lit, but even then, there were more problems. According to Behr, "The writing process turned out as painful and disgusting as we thought it would be." However, he does acknowledge that "in the end, it turned out solid, with some nice twists and some great stuff for Garak and Dukat, and the paired up teams." See more »


When Jake is crawling through the ore chute and Sisko and O'Brien are talking with him, when they tap their communicators the activation sound is consistent with Bajoran communicators, not Starfleet. See more »


Gul Dukat: Let me guess: someone tried to duplicate my access code, hm?
See more »


Star Trek: Deep Space Nine - Main Title
Written by Dennis McCarthy
Performed by Dennis McCarthy
See more »

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User Reviews

A neat idea but it did seem to take a LONG time to get to the finale...
21 December 2014 | by MartinHaferSee all my reviews

While doing some routine work on the station, a long-hidden program is activated. It seems that an old Cardassian program designed to handle rebellions by Bajoran slaves on the station was hidden in the system and has just begun broadcasting warnings from Gul Dukat. The warnings indicate unless the rebellion is stopped immediately, stern measures will result. The stern measures mean a release of poison gas! So, as the Commander and crew try to turn off the program, they need to keep moving in order to prevent from being killed. Eventually, however, the real Dukat arrives and he thinks this is all very funny. Well, by the end, the joke is on him. See this one and see what I mean.

The idea for this show is pretty novel and generally good. However, it is hard to sustain this for the entire program and eventually it becomes a bit overlong. An excellent idea but one that was difficult to sustain for so long.

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