(Kate argues with Jack about why he put the dynamite in his pack instead of her's)
Jack: I made a judgment call.
Kate: We drew straws.
Jack: Sorry, but I'm not gonna let drawing straws make decisions like that for us, Kate.
Kate: You had no right to make that -
Jack: Everybody wants me to be a leader until I make a decision that they don't like. You want to keep second-guessing me, Kate? That's your call. There's something that you need to know. If we survive this, if we survive tonight, we're gonna have a Locke problem. Now, I have to know that you got my back.
Kate: I got your back.