Andrew Jackson Greer of Clayton, Michigan went missing on Feb. 12, 1979, at age 15 after he ran away from home. He was last seen leaving his high school before he disappeared.

Andrew was killed when he was struck by a semi-truck while hitchhiking down I-75 near Macon, Georgia on Valentine's Day in 1979. He was buried as a "John Doe" because those in Georgia had no idea who the young boy was and DNA testing didn't exist yet.

According to the Detroit Free Press, the case was re-opened in 2014 and investigators finally got a lead, thanks to advancements in technology. In December 2017, a retired Bibb County Sheriff’s Department deputy made the connection to the “John Doe” in Macon and notified Michigan State Police. A DNA sample was taken from “John Doe” at the Georgia Bureau of Investigation and sent to the Center for Human Identification for comparison.

The sad part is the fact that his parents passed away before ever knowing what happened to their son. They had no idea that he was killed just two days after he went missing.