This will be the first Christmas Lisa Park and her husband, Jay, will spend without their son, Jason.
The 17-year-old died in a DUI crash in Fremont in late October. His friend who was driving under the influence was behind the wheel.
"This is the first time something has happened where I have absolutely no control over changing it or making it better," Lisa Park said.
That's why the Parks want to send a strong message to their friends and neighbors during this holiday season: Be responsible.
"The split-second decision. It's not worth it. It's really not worth it," Jay Park said. "You're going to have to live with it for the rest of your life."
Fremont police are joining 20 other agencies in Alameda County this holiday season to stop drunk driving. Officers are even taking to Twitter on a virtual ride-along to show what they're doing.
"Most of our officers do have kids," said Geneva Bosques, Fremont Police Department's public information officer. "And when we come across these horrific traffic collision scenes, it just really hits home. It's heart wrenching."
And it's definitely heart wrenching for families like the Parks. They said their faith has kept them strong, but not having their son around anymore hurts.
"Holiday season is about family gathering, sharing, loving and having that person not around, it is extremely difficult," Jay Parks said.