Members of the Minneapolis Police Department, above, stood for the national anthem as part of a National Police Week ceremony for law enforcement members who died in the line of duty.

Tuesday's ceremony at Minneapolis City Hall, which included members of the Hennepin County Sheriff's Office, honored 68 officers and deputies dating to 1884.

At right, Blake Moua, a Minneapolis police officer and honor guard member, rang a bell as a roll call of the fallen was read.

"Today we say thank you. You are gone, but you are never forgotten," Minneapolis Police Chief Janeé Harteau told the assembled.

On average, one law enforcement officer is killed in the line of duty in the United States every 58 hours, according to the National Law Enforcement Officers Memorial Fund.

This year, 273 fallen law enforcement officers, including Mendota Heights officer Scott Patrick, who was killed last summer, were added to a national memorial in Washington, D.C.