Dramatic video shows plane nosedive before deadly crash in Southern California

SANTA ANA, Calif. -- Dashcam video shows a twin-engine Cessna as it fell from the sky, head first, around 12:30 p.m. Sunday. None of the five people on board survived."It just banked, he turned and it just came straight down," witness Alex Perkins said.The victims all worked for a Northern California real estate consulting firm and were on their way to a real estate conference in Orange County, reports CBS News correspondent Mireya Villarreal. Some of them were related to each other. It happened