Fallen heroes: Meet some of the law enforcement officers killed by gunfire in 2016

(Curtis Compton/Atlanta Journal-Constitution via AP)

(AP)

(AP)

(AP)

(Officer Down Memorial Page)

(Photo courtesy Officer Down Memorial Page)

(Officer Down Memorial Page)

(Officer Down Memorial Page)

(Officer Down Memorial Page)

(Officer Down Memorial Page)

(Officer Down Memorial Page)

(Officer Down Memorial Page)

(Officer Down Memorial Page)

(Officer Down Memorial Page)

(Officer Down Memorial Page)

(Officer Down Memorial Page)

(AP)

(St. Louis County Police Department)

(L.A. County Sheriff's Department)

(Officer Down Memorial Page)

(Officer Down Memorial Page)

(Officer Down Memorial Page)

(City of Maryville, TN)

(Officer Down Memorial Page)

(Sebastian County Sheriff's Office)

(Tennessee Bureau of Investigation)

(Officer Down Memorial Page)

(Officer Down Memorial Page)

(Officer Down Memorial Page)

(Officer Down Memorial Page)

(Officer Down Memorial Page)

(Dallas Police Department)

(Dallas Police Department)

(Officer Down Memorial Page)

(Officer Down Memorial Page)

(Phoenix Police Department)

(Officer Down Memorial Page)

(Officer Down Memorial Page)

(Officer Down Memorial Page)

(Officer Down Memorial Page)

(Greenville, S.C., Police Department)

(Officer down Memorial Page)

(Prince William County Police)

(Officer Down Memorial Page)

(Officer Down Memorial Page)

(Fargo Police Department)

(Harford County Sheriff's Office)

(Officer Down Memorial Page)

(Reuters)

(Officer Down Memorial Page)