Rangers from Lake Mead were among the first responders on scene at a tour bus accident on U.S. 93 on Friday, January 29th. The accident killed seven Chinese tourists and injured ten others. In mid-afternoon, the parkâs interagency dispatch center received a request for assistance at the accident from the Mohave County Ranchos Fire District. Thirteen rangers were dispatched and were joined by Bureau of Reclamation police officers form Hoover Dam. The accident occurred about 20 miles outside the park. A half dozen agencies responded along with six medevac helicopters. According to news reports, the bus was heading to Las Vegas when it veered off the road from the northbound lanes into the southbound lanes. The tour bus is owned by D. W. Tours of San Gabriel, California. The Arizona Department of Public Safety and the National Transportation Safety Board are investigating.