National Police Week 2013: Candles Raised for the Fallen

More than 19,000 names of fallen law enforcement officers are etched into the walls of the National Law Enforcement Officers Memorial -- and more are added every year.

One law officer in the United States dies in the line of duty every 57 hours according to the keepers of the police memorial. For this year's ceremony, 321 names were added to that wall.

Among them: Prince William County Officer Chris Yung, killed on New Year's Eve 2012; Alexandria Police Officer Morton Marshall Ford III, who died in 2011 from complications caused by his shooting in 1974; and Virginia State Trooper Andrew David Fox, killed in October 2012.

Howard County officers remembered fallen officers from Maryland, including Howard County police Cpl. Scott Wheeler who died while working speed enforcement in 2007.

A group of 23 officers and support personnel rode to D.C. as part of the annual Unity Tour. Police raised $55,000 for the Memorial on the 275-mile ride from Philadelphia to D.C.

Monday night, friends, families and fellow officers gathered to remember, some with smiles, many with tears.

The candles burned as a sign the lost would not be forgotten.