Description:The bus was on a routine tour of the Grand Canyon, taking tourists from the lights and glamour of Las Vegas to the beauty of the natural wonder. On such trips, passengers get a glimpse of the Hoover Dam and the northern Arizona wilderness, maybe even see a deer or two.
That was the agenda for the 50 or so passengers aboard a charter Silver State Trailways bus on Friday. But as the bus was returning from the Grand Canyon that evening, investigators said something went terribly wrong.(0:18)