New police scanner audio shows the extent of the chaos taking place behind the scenes during Monday's mass shooting at the Navy Yard in the nation's capitol, as EMS crews risked their lives to rescue those shot and injured.

A total of 13 people, including the shooter, lost their lives in the tragedy, and several more were hospitalized due to injuries sustained in the shooting.

On this morning's Fox and Friends, D.C. Mayor Vincent Gray confirmed that the shooter, contractor Aaron Alexis was being treated by the VA for mental health issues including paranoia, saying he "heard voices."