BALDWIN: We are learning some new details this afternoon on the Navy Yard shooter, Aaron Alexis. Authorities are now investigating whether a work place dispute may have sparked Monday's killing spree. Law enforcement officials told the "Washington Post," Alexis worked on the fourth floor in that Building 197 where the shootings began. And those sources believed Alexis shot first at co-workers he was having problems with and then his rampage turned random. Alexis killed 12 people before authorities shot and killed him. We have also learned the same company that did a background check on Alexis also did a background check on the NSA leaker Edward Snowden. Back in a moment.
Navy Yard Shooting: Possible Motive