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Fallout (Stargate SG-1)
Kianna, Sam and Jonas examining the machine.

Stargate SG-1



Production #


Original air date

January 23, 2004

Story by

Corin Nemec

Written by

Joseph Mallozzi & Paul Mullie

Directed by

Martin Wood

Guest stars

Corin Nemec as Jonas Quinn
Emily Holmes as Kianna Cyr
Gillian Barber as First Minister Dreylock
Patricia Drake as Counselor Lucia Tarthus
Julian Christopher as Counselor Vin Eremal
Bill Nikolai as TSgt. Vern Alberts
Martin Wood as Major Wood

Preceded by


Followed by


SG1 season 7
SG-1 Season 7
1 2 3 4 5 6 7
8 9 10 11 12 13 14
15 16 17 18 19 20 21
Season 6 Season 8

"Fallout" is the fourteenth episode of the seventh season of Stargate SG-1.


Jonas Quinn arrives back to Earth for help, due to the mining of the Naquadria, Langara experiences several violent tremors, and will face an earthquake that will destroy Kelowna. As Daniel negotiates with the councilors, Sam aids Jonas with the help of Jonas's assistant, Kianna, unaware that Kianna is not who she appears to be....


Jonas Quinn returns to Stargate Command, because there is a problem on Kelowna. He tells them that they found out how the Naquadria was created and that the process which transforms Naquadah into Naquadria is still going on. This process now works deeper and deeper into their planet and will soon destroy it.

Major Samantha Carter goes to Kelowna where she is presented with Jonas's research. During this time she also meets his assistant, Kianna Cyr. In the meantime, the representatives of the three major powers of Langara (the new name of their planet) arrive on Earth where they are presented with the fact that although the center of the catastrophe will lie in Kelowna, the whole planet will become uninhabitable.

Back on Kelowna the three scientists are still researching until an earthquake takes place. On Earth the three parties are still facing problems in their plans of evacuating the planet. Another problem is brought to the table when it is revealed that it was the Kelownan test of the Naquadria bomb that caused the chain which is destroying the planet. This causes much outrage from the representatives until Colonel Jack O'Neill loses his patience and tells everyone they need to focus on the immediate crisis. SGC has an ally, Medrona, at a similar level of development as Langara and who can take in several thousand refugees. The councilors ask about relocating to an uninhabited planet, or rather three uninhabited planets, one for each country but Teal'c explains that if they simply arrive on a primitive planet they will not have the resources to support a large population. Plus, there are logistical limits to how many people can get through the Stargate in time. So no matter what they choose, many people will die. Jackson explains again that the most practical way to save what can be saved of their civilization is to accept Medrona's offer.

On Kelowna, Carter finds a way to approach the problem by detonating a nuke in a fault near the Naquadria vein, stopping the transformation from reaching the pocket, and Jonas shows her a Deep Underground Excavation Vehicle which can dig into earth. Together with tunnel crystals from the Tok'ra they would be able to dig deep enough, so Teal'c goes to the Tok'ra to bring some of them back. While Carter is checking the digger she talks with Jonas about Kianna, who, unknown to them, injects herself with something in the laboratory. Later Carter finds out that the machine uses Goa'uld technology and they discover that Kianna is controlled by a symbiote, with proof being that she had a long-range Goa'uld communication device hidden in her quarters. When they confront her she reveals that she works for Ba'al but that she also wants to save the planet. The injections masked the presence of the symbiote so that Carter did not detect it. The goa'uld tells them that they have a common goal: to prevent the planet from exploding. However, Quinn rejects her help, and is taken away by guards.

Carter and Quinn keep working on the excavator, but all of their simulations with the digger fail. Star Gate Command consults with the delegates, and they decide their best chance to avoid the planet's destruction is to take the Goa'uld on board to help make constant ongoing modifications during the digger's operation. She joins the team on the Excavator, along with Teal'c as security.

In the meantime, the delegates on Earth face the problem that Ba'al may come to the planet because the Goa'uld in Kianna hasn't made a scheduled contact with him. However, they decide to ignore this problem and instead concentrate on the possible evacuation, which also brings problems due to the mistrust between the three nations, until O'Neill tells them that Star Gate Command has decided they won't help them with the evacuation, the Medronans are nice people and shouldn't have to put up with people as annoying as the Langarans. The refugee deal is off. The delegates can stay until the excavator team reports, but that's it. Hammond confirms the decision, leaving the delegates speechless.

Back in the digger they also have several problems but thanks to the Goa'uld, Quinn, and Carter they are able to solve them each in turn. When the Gou'ald and Quinn are alone she tells him that she has feelings for him, but he finds her disgusting. She reminds him that he never knew the host before the symbiote took her--his previous attraction was always to the Goa'uld personality. But he still does not trust her.

An underground volcano causes the excavator to lose hull integrity. Thanks to Carter (and over the goa'uld's objections) they divert power to the shields and make it through. The goa'uld is impressed with Carter, but doesn't understand why she would risk her life for aliens who likely would not do the same.

The excavator starts slowing down and they realize the forward drills were damaged by the magma from the volcano. They finally get stuck over a kilometer from the target, too far to detonate the bomb effectively. There isn't enough time to return to the surface for repairs. The only way to come close enough to the Naquadria is by using the tunnel crystals to create a tunnel just large enough for a single person to get down. Because the tunnel would be filled with toxic gas and heat, the Goa'uld decides to go, as she can protect her host, and although this offer was made much to the surprise of the others, as there is no other choice, they agree.

The Goa'uld is able to plant the bomb despite being heavily weakened from the journey, but the digger is steadily losing power, because the generators were also damaged. The Goa'uld tells the others to abandon her as time is running out, if they wait for her, they will die, too. Jonas Quinn orders her to come back, but the Goa'uld protests that the host body is severely damaged and she may not be able to heal it. Quinn tells her to come back anyway, and she struggles upwards, barely managing to return to the excavator in time due to her condition. They start their rise back to the surface and just reach it before they deplete their energy reserves. Quinn comforts Kianna, who is not doing well.

At Stargate Command the parties are informed by the Kelownans that they detected a large explosion at the planned coordinates.

After this mission the team returns to SGC where Kianna gets medical treatment, although her symbiote dies. She reveals that the Goa'uld was impressed by them and that she saved her life. Together with Quinn she returns to Kelowna.


Andari Federation; Anubis; Ba'al; Data Crystal; Deep Underground Excavation Vehicle; Deuterium; Earthquake; Janet Fraiser; Goa'uld; Joint Ruling Council; Kelowna; Kianna Cyr's Goa'uld; Langara; Langaran; Long range visual communication device; Madrona; Madronan; Mount Kallan; Muon radiation; Naquadah; Naquadah dampener; Naquadria; Nuclear warhead; Shol'va; Thanos; Titanium; Tirania Confederacy; Tok'ra; Tok'ra tunnel; Volcano

Notable QuotesEdit

Eremal: If you knew more of our history you'd understand our reluctance to believe Kelownan propaganda.
Jackson: Well our own scientists have studied the problem. And while it is true that Kelowna will bear the brunt of the initial explosion—in fact by our calculations half the country's landmass will be destroyed—you're not taking into account the dust and debris that will be thrown into the upper atmosphere. It will block the sunlight and lower the average temperature significantly. For all intents and purposes, your entire planet will be uninhabitable.

Carter: It's possible to create these particles in the lab. But there's really only one way they could have been produced in sufficient quantity and with enough energy to penetrate several miles under the crust of the planet.
Jonas: It was the naquadria bomb test. The test we conducted two years ago. We did this to ourselves.

Jackson: This is diplomacy, Jack. This is the way the game is played. It takes patience.
O'Neill: Yeah? Well I'm fresh out.
Teal'c: As am I.
O'Neill: I think you're on your own.

Kianna: You made the right choice. Your confidence in me will not go unrewarded.
Carter: We had to choice. And for the record, our confidence in you is minimal.
Kianna: Which is no doubt why the Sholva will be accompanying us. And why all of you are armed.

(When confronting the Langaran delegation)
O'Neill: You folks are done
Dreylock: I don't understand.
O'Neill: Well, you see, we actually like the Medronans. They're nice people. And we've decided there is no way we would subject them to the likes of you. Deal's off, you're toast.
Tarthus: General?
Hammond: Colonel O'Neill is right. You can stay until we hear back from Jonas and Major Carter.
O'Neill: (smiling) That's what you get for dicking around.

Kianna: You waited.
Jonas: You held up your end of the bargain.
Kianna: Was that your only reason?

Jackson: Miss it?
Jonas: Yeah. I do.


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Stargate Wiki has 4 images related to Fallout.
  • The original title of this episode was "Turn of Events".
  • This episode marks the first and only guest-star return of Jonas Quinn.
  • The issue with Ba'al is never revisited, despite it being a "distinct" possibility he will come to the planet if Kianna Cyr's Goa'uld does not report in. Although, it is revealed that Kianna didn't tell him about the Naquadria as she wanted it for herself. It's possible she did report in and created a lie so he wouldn't come to the planet before dying.
  • The Goa'uld states that " symbiote will protect me". A Goa'uld would have said "I will protect the host". However she could have meant the human when she spoke of the "symbiote". In which case it would have been correct, as the human body does indeed shield her from the harmful effects, although an unusual way of saying it.
  • This episode is one of very few in the series where a Goa'uld is shown to be capable of romantic emotions as is shown by Kianna's Goa'uld's attraction towards Jonas Quinn.
  • This episode shares certain similarities with the 2003 film The Core.
  • Corin Nemec (Jonas Quinn) pitched the story and wrote the outline for this episode which Joseph Mallozzi and Paul Mullie turned into the final script.
  • Julian Christopher (Vin Eremal) later appeared in a Smallville episode of the same name.


  • Major Samantha Carter sketches the process of nuclear fusion on a blackboard. She misspells Deuterium (an isotope of Hydrogen) as "deutrinium". This may also be intentional, considering the fictional metal Trinium was previously discovered in an earlier episode, which forms the later half of the word. It could then be theorized that it is some form of fictional combination of Deuterium and Trinium. One real and the other fictional.
  • The audio transmission from Kelowna reporting the success of the mission states that there was an explosion and that "geological survey places the epicenter at the target coordinates". Since the target is underground, the correct term would be hypocenter, as the epicenter is the point on the surface beneath which the earthquake happens.
  • The Madronans' homeworld, called Madronis here, was called Madrona in both "Touchstone" and "Disclosure".
    • In "Homecoming," it was stated that Jonas was returning to Langara as the Kelownan representative on the Joint Ruling Council, however, this episode seems to depict him as little more than just a scientist while someone else acts as the Kelownan representative.
  • However, as First Minister Dreylock stated in response to Counselor Tarthus' inquiry regarding Jonas ("I thought Jonas Quinn would be joining us,"), Jonas is occupied with the Naquadria problem. He most likely prioritized working on the scientific issue, rather than having to deal with the political issue, instead leaving it for the First Minister. This would make sense, as it was previously stated that Jonas is one of the finest scientific minds of the time for the Kelownan people, which would mean his talents are better focused on solving the serious issue they're facing (I.E., the Naquadria problem).
  • During the descent in the digger, Major Carter says "We're passing through a river of molten rock", but they are drilling straight down. If the digger was passing through molten rock, after passing it, the rock would've simply flowed down the shaft, covering the digger.
  • Carter states that a generator aboard the Kelownan excavator is running "at 130% efficiency". That is physically impossible, as efficiency is the ratio of work output to work input. More work cannot be output than was input in any physical system; in fact, the Second Law of Thermodynamics fixes 1 as the universally valid supremum of the efficiency of any physical process.
    • It is possible that what Carter meant by this statement is that the generator is operating at "130% of the normal maximum efficiency known for that particular design" (so, if the design normally has an efficiency of 50%, 130% of that would be 65%). If this is the intended meaning, there is no fundamental theoretical issue with the statement, although the wording is awkward.

In other languagesEdit

  • French: Dangereuse Alliance (Dangerous Alliance)
  • Italian: Disastro Imminente (Imminent Disaster)
  • Spanish: Secuelas (Consequences)
  • Czech: Hrozba z podzemí (Threat from Underground)
  • German: Kiannas Symbiont (Kianna's Symbiote)
  • Hungarian: Végveszély (Imminence, Peril)
  • Polish: Kataklizm (Cataclysm)

External linksEdit

Smallwikipedialogo This page uses content from Wikipedia. The original article was at Fallout (Stargate SG-1). The list of authors can be seen in the page history. As with SGCommand, the text of Wikipedia is available under the GNU Free Documentation License.

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