You might get a little surprise with your pizza delivery this week.

Domino’s Pizza, the National Fire Protection Association, the St. Joseph Fire Department and the Red Cross are joining forces to promote fire prevention.

From Monday, Oct. 8 to Friday, Oct. 12, anyone who orders a Domino’s pizza may be randomly selected and surprised at the door when their pizza arrives aboard a fire engine.

If all the smoke alarms in the home are working, the pizza is FREE. If the smoke alarm is not working, the firefighters will replace the batteries or install a fully functioning alarm.

It’s all part of National Fire Prevention Week, which was established to commemorate the Great Chicago Fire. The tragic 1871 conflagration killed more than 250 people, left 100,000 homeless, destroyed more than 17,400 structures and burned more than 2,000 acres. The Great Chicago Fire began on October 8, but continued into and did most of its damage on October 9, 1871.