A massive fire erupted Thursday night at a refinery in Southern California. Firefighters were dispatched around 9:35 p.m. to the Chevron refinery in El Segundo after receiving calls of smoke in the area. Dig deeper:The refinery spans two-square-miles, supplying more than 40% of jet fuel and more than 20% of motor vehicle fuel across all of Southern California. There are 1,000 Chevron employees, 1,000 contractors on any given day and their very own Chevron Fire Department with 24 full-time firefighters. The refinery maintains its ability to make roughly 12 million gallons of fuel every day, that's enough gasoline to fill up a million cars a day.