North Carolina: 2 Charlotte officers killed; shooters at large.
California: 'Officer down!'. How the Long Beach PD won a race for life.
California: Bomb planted at Santa Cruz police officer's home.
Virginia: Portsmouth police seek man who shot and wounded officer.
Maine: Body lies in driveway during 16-hour police standoff.
Wisconsin: Coroner: Stun from Taser didn't kill Menasha man.
Michigan: Police dog dies during training exercise.
Indiana: Stress, silent culture drive police suicide rate. Officers urged to talk more, spot when peer is troubled.
Pennsylvania: Sheriff against effort to limit handgun sales.