 That could deactivate the sensor that determines if a passenger is in the seat, disabling the airbag. ABC's Chuck Sievertson. Outrage in court in Waukegan, Illinois, where Robert Cremo III, who shot and killed seven people during the Fourth of July parade in the Chicago suburb of Highland Park in 2022, rejected what was supposed to be a plea deal. Leah Sondheim's mother was one of those murdered.