You must find a way to get past the dog. There is a little box on the side of the building where the crane is operated. You will see levers labeled "1", "2", "3", "4", "5", and "6". If you go inside the building where you operate the crane, directly behind his head near the door is a diagram. "1", "2", and "3" go in the top, and "4", "5", and "6" go in the bottom. To get over to the trailers, you must move the two boxes over to where they will connect with the other two that are on top of one another. Then , walk over on the two boxes to the other two and use the bolt cutters to cut the chain connecting the two that are on top of each other. You can now move the boxes to reach the trailer.
