On November, 14, 1999, a 46-year-old male volunteer fire fighter (the victim) died while responding to a mutual-aid call from a neighboring career department. The career department was battling fires in approximately 200 hay bales and requested an additional supply of water. Upon receiving the call for assistance, the victim responded in the department's tanker truck. The tanker truck rounded a curve near the center line and drove off the right shoulder of the northbound lane. In an attempt to steer the top-heavy truck back onto the road surface, the victim oversteered and lost control of the vehicle. He locked up the truck's air brakes but could not bring the truck under control. The truck crossed over the center line and reached the shoulder of the southbound lane. The truck tires dug into the shoulder, causing the truck to flip and roll. The victim was partially ejected through the rear window of the cab. The truck came to rest upside down with the victim partially trapped within the truck, between the top of the cab and the ground. The victim was extricated from the truck and transported to a local hospital where he was pronounced dead. NIOSH investigators concluded that, to reduce the risk of similar incidents, fire departments should: ensure that all operators of emergency vehicles be familiar with the vehicle and its design; ensure that operators of emergency vehicles operate them in a safe manner to minimize the potential for a skid; ensure that all fire fighters riding in emergency fire apparatus are wearing and belted securely by seat belts; and, develop and implement Standard Operating Procedures (SOPs) for operation of emergency vehicles.