Active Shooter: America Under Fire

The 2015 shooting in San Bernardino, California brings out a massive response from law enforcement. A shocked community responds to homegrown terrorism.

Stories of loss and heroism during the 2013 shooting at the Washington Navy Yard. The shooters sister recounts her brothers descent into violence.

A shooters violent path through Santa Monica, California leads to a deadly confrontation on a college campus. An examination of the shooters mental health.

An exploration of the 1999 attack at a high school in Littleton, Colorado and the myths that may have inspired the active shooter phenomenon. Documentary series finale.