Greenfield PD employs "elf on the shelf" this holiday season: Ralph is working to keep you safe!

An "elf on the shelf" is on duty at the Greenfield Police Department this holiday season!

Greenfield police on Monday, December 19th posted to Twitter some photos of "Ralph" in action.

He first spent some time reviewing data from crashes over the snowy weekend -- and then headed out on patrol, looking for bad guys and making sure everyone stayed safe.