Sabrina Garcia said the tour began Thursday, with buses taking students in Southern California on the ride to the campus for a three-day stay there. She said she decided to postpone the tour because she had a school project to complete.
"I was devastated when I heard about the crash, and relieved that I didn't attend," Garcia said. "I can't imagine how those kids feel. You think you're going somewhere safe with your school — and you end up in an accident."
A CHP dispatcher says the bus and truck were on opposite sides of the freeway when the truck crossed the median and slammed into the bus, causing an explosion and fire.
Investigators say the truck driver might have been trying to avoid a passenger car that was also involved in the crash, which shut down north- and south-bound traffic on the freeway.
"There was a small white sedan in front of the truck," Heitman said. "The FedEx vehicle did sideswipe the sedan before it crossed the median."
No one in the car was injured.
A first responder who helped set up a triage at the scene said 36 or 37 people received injuries ranging from minor to severe burns, broken legs and noses, and head lacerations.
"The victims were teenage kids. A lot of them were freaked out. They were shocked. They still couldn't grasp what happened," said Jason Wyman of the Orland Volunteer Fire Department.
Eleven people were taken to Enloe Medical Center in Chico, hospital officials said. Two of those patients were listed in critical condition Friday morning.
Five people were taken to Mercy Medical Center in Redding in fair condition. Two patients were taken to University of California, Davis, Medical Center in critical condition. One patient died at 10:30 p.m. Thursday bringing the death toll from nine to 10.
A nursing supervisor said three people were taken to Oroville Hospital in Oroville. She declined to describe their conditions, citing patient privacy laws.
Bonnie Kourvelas, a FedEx spokeswoman, said in a statement Thursday night: "Our thoughts and prayers are with everyone involved in the tragic accident on I-5 in California. We are cooperating fully with authorities as they investigate."
The American Red Cross set up a relief station at a Veterans Memorial Hall community center in Orland, about 5 miles from the crash site. Officer Joel Lynch said seven victims who were not hospitalized with injuries were staying the night with about 25 volunteers. A community member ordered pizza for the students.
Joseph reported from San Francisco. Associated Press Photographer Rick Pedroncelli in Orland, Associated Press Writers Lisa Leff in San Francisco and Daisy Nguyen and Tami Abdollah in Los Angeles contributed to this story.
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