Jack began to cary back the supplies that he had found laying around the island. A gray tarp, lots of fallen branches for fire wood. Though he wanted to venture into the jungle look for more, he did want to leave the group behind and let them worry about him. 
Jack was still angered by Gordons thoughts on survival, he thought burying the dead was needed, it what was in the past was in the past, and he had to move on. He finally returned to the plane, through the trap away from him, placed the fire wood on the ground and began to try to make a fire for warmth and light, it would get dark soon anyway.