Investigators in Orland, Calif., do not know what caused a FedEx tractor-trailer to veer across a grassy highway median and slam into a bus, killing 10 people
Investigators in Orland, Calif., do not know what caused a FedEx tractor-trailer to veer across a grassy highway median and slam into a bus, killing 10 people. An eye witness told CBS affiliate KOVR the tractor-trailer may have had mechanical trouble and was on fire before it struck the bus. Teri Okita reports.