You open the shuttle doors and immediately begin carrying crates of construction supplies out of the rear cabin of the shuttle. As you exit the shuttle, you see the other pilots already doing the same thing; piling up stacks of supply crates in their little corner of Babylon.
The jungle surrounding the campsite is incredibly dense, and it's likely that dangerous creatures live in the wilderness. Eventually, the settlers will be forced to start clearing the trees, but for now simply unpacking the contents of the shuttles is the name of the game.