(About the security perimeter)
Locke: Just tell me how we're gonna go through this.
Kate: We're not gonna go through it. We're going over it. Sayid, where's the axe?
Sayid: It's in his pack.
Locke: No, wait a minute, I got it. Here, I got it!
(Sayid pulls a block of C4 out of John's pack)
Sayid: I thought you didn't know there was any C4.
Locke: Well, I stand corrected.
Sayid: Why did you take it?
Locke: You never know when a little C4 might come in handy.
Sayid: You'll have to do better than that.