During the first half of the hour I'm joined by Bob Dougherty, the intelligence and counter intelligence director at Counter-Terrorism Watch Inc., a US defense contracting firm specializing in intelligence, counter-terrorism, and special operations training.
We discuss the potential motives behind the San Bernardino shooting, including terrorism and workplace violence.

During the second half of the hour, I'm joined by callers as we discuss how to stop the epidemic of gun violence in America.

(Image courtesy David Bauman, The Press-Enterprise via AP)