Aaron Alexis scrawled messages on shotgun, authorities say

      |Authorities say there were messages scrawled on the sawed-off shotgun used by Aaron Alexis in the Navy Yard shooting. One said "better off this way," and another said "my elf weapon." The meaning of the phrases is unclear at this point. Charlie Rose and Norah O'Donnell report on the new scrutiny now given to screening at military bases and what the shooter's mother is saying about her son's act of violence.

      Related Videos

      You Might Like