A raging wildfire threatened an airport in southern California as firefighters scrambled to contain the inferno.Footage shows the Mountain Fire tearing through the hillside near the privately owned Santa Paula Airport on November 6 evening.Authorities said the blaze broke out on Wednesday morning, with dry bush and strong winds contributing to its swift spread.The fire has grown to around 32 square miles and is at 5 per cent containment, Cal Fire said. At least 10 people were injured, many of whom suffered smoke inhalation.Fire officials said at least 132 structures - mostly homes - were destroyed as some 10,000 people were under evacuation orders.The cause of the fire was still under investigation.