This class will present two case studies of incidents where flashover occurred. In one of the incidents, a firefighter was severely burned; in the other incident, a firefighter was badly burned and another firefighter died. Students will be given insight on fireground operations at both incidents and the many lessons learned including size-up, fireground communications, warning signs of flashover, what can be done to prevent flashover from occurring, building construction, rapid intervention team operations, mutual-aid response, and the importance of properly wearing and maintaining personal protective equipment.