CADDO, Okla. (KTEN) — People gathered at a monument in Caddo Thursday to remember three Oklahoma Highway Patrol troopers who were shot and killed 44 years ago.

There were two deadly shootouts in two different locations on that dark day in 1978.

Troopers Billy Young and  Houston Summers were assigned to track down two escaped inmates. The lawmen were involved in a shootout with the escapees and they were killed on a road near Kenefic.

The two inmates then stole a truck and headed to Caddo. Lt. Pat Grimes was looking for the two fugitives in a neighborhood when he was ambushed and shot dead.

Oklahoma Highway Patrol Troopers James Grimes, Houston Summers and Billy Young were shot and killed by escaped convicts on May 26, 1978.

The Highway Patrol will never forget the ultimate sacrifice made by those three troopers.

"The duty to honor them is the main thing that comes around every year," said OHP Capt. Scott Hampton. "We further that all throughout the year through  training and how we operate. This day really shapes how the highway patrol changed a lot of things."

The two escapees were shot and killed by OHP personnel in that second shootout.