A Kennesaw man who pulled a gun on a family of five during a 2014 road rage incident will spend 15 years in prison, the Cobb County District Attorney said Monday.

A Cobb jury convicted James Matthew Colomb of aggravated assault Wednesday. And shortly after the verdict, Cobb Superior Court Judge Mary Staley Clark sentenced Colomb to 15 years in prison.

Colomb was driving his Mercedes-Benz on Barrett Parkway near Chastain Meadows on Nov. 1, 2014, when another driver “inadvertently cut him off in traffic,” Cobb District Attorney spokeswoman Kim Isaza said.

Colomb followed the vehicle to America’s Best Contacts and Eyeglasses, where he confronted the other driver in front of his wife and three children, Isaza said. The man apologized to Colomb, and Colomb started to leave. The man walked with his family to the store and smiled.

“When Colomb saw that,” Isaza said, “he put his car in reverse, opened his car door and pointed a handgun at the victim, saying he could ‘wipe the smile off his face.’”

Fearing Colomb might shoot, the man stepped in front of his family, Isaza said. Colomb left the scene without pulling the trigger.

“This happened in the middle of a Saturday, on a busy road, based on an innocent traffic maneuver,” said assistant district attorney Stephanie Adrean, who prosecuted the case. “Someone who is willing to pull a gun under these circumstances is an extreme danger to the community.”