Change: in briefly in the background. Theories: The sonic fence was built to protect Dharma from the hostiles. In "The Man Behind the Curtain", Dr.Candle, the man in the video said that it was built to protect   View changes from previous version. (Word count: 361)

Change:  discovers the fence after running away from his drunken father, Roger. He goes back there another day with the code to turn it off. He then made the bunny he had go first to make sure it was off. In the first season in "The Moth", the   View changes from previous version. (Word count: 361)

Change:  grabs Mikhail, and throws him into it. Mikhail says "Thank You", then a loud magnetic noise is heard. Foam starts coming out of his mouth, and then blood comes out of his ears. He then falls to the ground, seemingly dead. The rest manage to climb over the sonic fence.   View changes from previous version. (Word count: 271)