Please answer the following question: Given the following context:  Based on Andrea Yates and her family, the five children being drowned in the family bathroom by their mother. In the film itself, which is set in a secluded family farm, the mother suffers a psychotic break down due to postpartum depression and after her husband, a truck driver, hits the road again after only being home a day. It's all too much for her and she snaps, begins to break things in the middle of dinner. She then calmly walks away with the baby to the upstairs bedroom. Jimmy, the eldest son, trying to keep his younger brother and sister calm, starts cleaning up, but soon he decides to check on his mother and discovers the horrible truth. His baby brother is dead, and she's preparing to take care of the rest of her kids. Now hope for the family's survival rests on the shoulder of Jimmy, the eldest son and surrogate man of the house. After his mother tries to drown his sister and he knocks her out, Jimmy gets his brother onto a bike and tells him to ride for help while trying to get his sister to safety. Using his wits and intricate knowledge of the farm, Jimmy must try to protect his siblings while fending off the woman he has always known and loved as his mother. Only one of the children survives as the mother stalks a further two of them down and kills them in typical slasher style. Jimmy manages to survive up until his father arrives back after hearing him on a radio transmission. The film then cuts to a hospital and Jimmy is set to come home. His father then tells Jimmy that his mother is also coming home, much to Jimmy's surprise. We are then shown the mother, stood pregnant and singing rock-a-bye baby.  answer the following question:  What does Jimmy's father do for a job?
Answer:
truck driver