Authorities Search for Motive Behind Deadly California Shootings

Authorities in San Bernardino, California searched Thursday for a motive after a couple went on horrific shooting rampage at a holiday party for a social services agency that left 14 people dead and 17 others injured. "We don't have the motive at this point," said San Bernardino police chief Jarrod Burguan. "We have not ruled out terrorism." The Federal Bureau of Investigation said workplace violence was another possibility.