I was wondering...When Sawyer and Kate where locked up in their cages they were in these barracks right?
So how could they have escaped if it is rounded completely with those sonic sensors?
Correct me if I'm wrong...10x

You are wrong. You are wrong. You are wrong. You are wrong. You are wrong.

They were on a seperate island, far away from the barracks.

I am still doubtful because in episode 6 Juliet took Kate to Jack (when he was on the other side of the glass)...So how come could she have taken her such a long distance and across the island? This is why I thought that it was the same barrack...

Remember back to the speech Isabelle told Jack about how they only work on that island (they didn't really like coming there) And when Ben took Sawyer (when sawyer had that heart monitor thing) and hiked up to the edge of the island and showed him the Losties island across the water. I think there are two separate islands and the hydra station was on one and the Barracks are on another.

ALTHOUGH>>>> now that I think back to one of Marvin Candle's filmstrips he does say something about taking the Pala Ferry back to the barracks.... hmmmm.... now I have to research this.

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`Dear, dear! How queer everything is to-day! And yesterday things went on just as usual. I wonder if I've been changed in the night? Let me think: was I the same when I got up this morning? I almost think I can remember feeling a little different. But if I'm not the same, the next question is, Who in the world am I? Ah, that's the great puzzle!'

-- Alice, from “Alice’s Adventure’s in Wonderland”

Basically Jack Kate and Sawyer were all being kept on the seperate island at the start of series 3. When they took Kate to Jack that could have been a two minute walk away for what we know.

Living quarters for personnel stationed at the Hydra Station were probably built on the Hydra Station island. That might have been what Marvin Candle was referring to in the filmstrip. The Others refer to "The Barracks" as Home...not as the Barracks. Maybe the Dharma people (like Candle) did, too.

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charlie98210
"Whoa!" she said. "Cry 'Havoc!' And let loose the dogs of war!"
And, like Banquo's ghost, they just won't go away.