Charges filed yesterday against five Blackwater security guards reveal details of an incident in Iraq last year that provoked international outrage. Seventeen unsuspecting civilians were killed and 20 were wounded. The guards are charged with voluntary manslaughter, based on testimony from one of their comrades. The six used automatic rifles and grenade launchers to fire on cars, houses, a traffic officer and a girls' school. James Risen is reporting the story for the New York Times.