Headlines about Navy Yard mass shooting

Headlines from the Navy yard rampage that killed 12 people plus the shooter.

From the Bakersfield Californian, Boston Herald, Boston Metro, New York Daily News, Philadelphia Daily News, USA Today, Virginian Pilot and Washington Post.

Aaron Alexis, a Navy contractor who had been discharged from the service after "a pattern of misconduct," murdered a dozen people at the Washington Navy Yard.