Two fire trucks responding to a call in an L.A. suburb collided in an intersection Wednesday sending one careening into a restaurant.
Fifteen people were injured, including six firefighters, in the crash at Lu Dumpling House in Monterey Park.
Monterey Park Fire Chief Jim Birrell said trucks from his city and neighboring Alhambra were responding to a house fire around 3 p.m.
"There was a loud boom and a lot of shaking. I thought it was an earthquake," said waitress Wendy Wu.
Wu was in the walk-in freezer when the truck slammed through the front of the restaurant.
When she came out she saw a refrigerator and furniture thrown across the room and several people injured and bleeding. The truck plowed halfway into the restaurant, leaving rubble and shattered glass in its wake.
Birrell said one person is critically injured. Rosa Saca, a spokeswoman for Los Angeles County-USC Medical Center, told Fox News that person is not a firefighter.
An investigation to determine the cause of the crash has been launched.