Highlands Ranch—Garfield County Sheriff Lou Vallario and several of his deputies attended this morning's memorial service for Douglas County Deputy Zackari Parrish. The 29 year old husband and father of two girls was gunned down in a New Year's Eve ambush-style attack at an apartment complex in Highlands Ranch. Hundreds of people waving American flags lined the streets as the motorcade of law enforcement vehicles drove slowly to Cherry Hills Community Church, not far from the site of the shooting where three of Parrish's fellow deputies where shot by a crazed gunman. 37 year old Matthew Riehl, an Iraq War veteran and former attorney was eventually shot and killed by a SWAT team. The Garfield County Sheriff's Office is one of many law enforcement agencies from around the state that attended today's memorial for Deputy Parrish. Governor John Hickenlooper ordered flags at all public buildings to be flown at half-staff.