PBS Newshour: Navy Yard Tragedy Draws Attention to Who Has Access to Military Facilities

While Washington mourned the 12 victims of the Navy Yard shooting, authorities released new details about the shooter, Aaron Alexis. The Defense Department contractor had had run-ins with the law and sought help for mental health issues. Ernesto LondoƱo of The Washington Post joins Gwen Ifill to update the developing portrait.