Ms. Williams class was working on changing tires on trucks and doing maintenance on the part where the tires go on to. On September 21st., Ms. Williams’ class was tasked with changing and maintaining tires from several trucks. During the class, a truck was brought in for repair by a customer.  While some students were focusing on the changing of tires, other students were focusing on finishing some bookwork. Later on in the period, Ms. Williams had called her students in order to teach them how to drain the oil from a truck, in order to replace it with fresh oil.