Article Photos: Brakes become key issue in deadly Calif. bus crash 10/13

Bolldstains and personal items are seen as an investigator from the National Transpoartation Safety Board photographs a tour bus after an accident that killed at least eight people and 38 more were injured after a tour bus, left, carrying a group from Tijuana, Mexico crashed with two other vehicles just north of Yucaipa, Calif., Sunday, Feb. 3, 2013. (AP Photo/Reed Saxon)