celebrating our nation s independence day. i m spencer christian. tonight it s fireworks versus the fog. i ll show you who might win coming up. when was the last time a tow truck led a parade? it did in concord today to carey a land marshal like you ve never seen before. fourth of july and the grand finale is still to come. the highlight of the holiday, the fireworks shows won t start for another few hoarse, but people in the bay area have celebrated all day long. happy fourth of july. kids young and old have been lining the streets to enjoy the parades. we have team coverage starting in the south bay with