The patrol unit belonging to slain Douglas County Deputy Zack Parrish is back in service for the first time since he was shot and killed on New Year's Eve.

However, former unit 1723 looks different than before.

The SUV is now officially "ZPIII" (Z-P-Three) after Deputy Zack Parrish, who was the third Zack in his family.

Unit ZPIII has an embossed front license plate with the Sheriff's shrouded badge along with his name, Parrish, and a thin blue line running through it.

Sheriff Spurlock has made ZPIII available for deputies on all shifts to memorialize Zack and his service to the Sheriff’s Office and our community, the department said on Facebook.

The patrol car used by slain deputy Zack Parrish is back in service, with some special touches.
The patrol car used by slain deputy Zack Parrish is back in service, with some special touches.
The patrol car used by slain deputy Zack Parrish is back in service, with some special touches.

Parrish was shot and killed on New Year's Eve when he, and other deputies, were called out to an apartment in Highlands Ranch for a disturbance call.

Four other law enforcement officers and two neighbors were also shot and injured by gunfire from the suspect, who police say fired more than 100 rounds.

Parrish left behind his wife and two young girls.

Family photos of Zack Parrish. Photos courtesy Dionna McCarthy Photography.