Now go to the far left near the fence and you will see some broken glass on the floor to inspect, once done with that go around the corner of the wall and you'll come across a big X on the wall, its a chalk mark but who did it!? Now go and ask about the flashlight and the chalk so speak with Ben, Kenny, Katjaa, (Doug or Carley) depending who you saved and then speak with Clementine (its vital you leave Clem until the end). As soon as you finish talking to Clem, Duck comes up to you and tells you about the gate. Head for the gate. You can high-five Duck by pointing at his hand if you do, you will gain a fan. You can also choose not to do it which would be not cool for Duck. After that talk to him and ask about everything, and then inspect the chalk scuff on the floor. Now push the gate open, after exiting go to the right. Along the way, you can look at the fence (pointless really). Look out for the grate in the wall above the floor, open the grate and pick up the bag of supplies from inside. Watch the cutscene, Lee showing the bag to Lilly. There is a lot of shouting going on outside now, it will turn out that your camp has been attacked by some bandits.