No one knows what it is but now some "official" sources say it was only an aircraft. Pardon my ignorance, but if it were an aircraft, wouldn't they know who/what it was especially with all the flight traffic around LA? I've also just read in the LA Times it could've been an errant missle launch. Either way, this incident makes those in charge look incompetent or like terrible liars. And if you look at the CBS video it really does look like rocket.