"A mysterious bright light in the sky has sent Californians into panic," reports the BBC. "Videos posted online show a bright flare rising high, before a wide, bright blue flash emerges in a cone shape. Many videos continue to track the light for several minutes."

Last night, Californians immediately leapt to social media to propose their theories of the phenomenon, ranging from a nuclear missile attack to meteors. "Law agencies and news media in San Diego were flooded with calls about 6 p.m. from people reporting everything from a flare to a comet to a nuclear bomb in the western sky," reports the San Diego Union Tribune.

Just a day earlier, the FAA had issued flight restrictions for the Los Angeles International Airport, denying aircraft access to one of the most frequent approach paths for international and domestic travel.