chunk: Tom suffers a serious wound on his cheek, and the camp guards realize it will not be difficult to identify him. That evening the family hides Tom under the mattresses of the truck just as guards arrive to question them; they are searching for the man who killed the guard. Tom avoids being spotted and the family leaves the Keene Ranch without further incident. After driving for a while, they have to stop at the top of a hill when the engine overheats due to a broken fan belt; they have little gas, but decide to try coasting down the hill to some lights. The lights are from a third type of camp: Farmworkers' Wheat Patch Camp (Weedpatch in the book), a clean camp run by the Department of Agriculture, complete with indoor toilets and showers, which the Joad children had never seen before.