In 2011, 72 law enforcement officers were feloniously killed in the line of duty. Of the officers killed, 50 were employed by city police departments. Line-of-duty deaths occurred in 30 states and Puerto Rico. Of officers killed in 2011, most (63) were killed with firearms. Twenty-one officers were slain with firearms when they were 0-5 feet from the offenders. In addition, most (51) of the officers killed were wearing body armor at the time of their murders.
Source: Federal Bureau of Investigation