Christmas trees are on display in many Middle Tennessee homes, and some even have ornate displays of light adorning the yard's trees and shrubbery.
But for many in the Law Enforcement Community, the holidays are a time to remember their fallen brothers, with a single blue light.
"We're all in the same business, so to speak," said Chief Mike Walker of the La Vergne Police Department, "Whether it's a municipal organization, Sheriff's department, a state of Federal agency, and even corrections officers."
Chief Walker has served in law enforcement since the mid-1970's. He was with the Tennessee Highway Patrol before coming to the La Vergne Police.
"I've lost friends, I've lost coworkers. I was head of a state agency and lost a young trooper back in 2007," Walker told Nashville's News 2.
According to the Officer Down Memorial Page, so far in 2012, 112 law enforcement officers have lost their lives in the line of duty. That number is down 28% from previous years.
In Tennessee, only one officer has been killed on the job. That was Officer Justin Maples of the Cleveland Police Department, who was killed in a car crash in May.
Two Middle Tennessee officers made the ultimate sacrifice in 2011. Trooper Andy Wall of Smyrna and Dickson County Sheriff's Deputy Richard Keith Bellar.
"That's part of it, we understand that, that's a part of the job. The threat is there every day," said Walker.
Project Blue Light was started in 1989, and since has grown into a nationwide event sponsored by the Concerns of Police Survivors. C.O.P.S. is an organization dedicated to helping the families of officers who have been killed in the line of duty.
Battery operated lights can be found at hardware stores or purchased from the C.O.P.S. Web site.