The NFL Network looks at arguably the greatest defensive line in NFL history tonight at 8 p.m. ET.

The nickname, Fearsome Foursome, really says it all. Merlin Olsen, Deacon Jones, Roosevelt Grier, and Lamar Lundy.

Here’s a link to the preview. Just to show how times have changed, not one of those guys weighed more than 285 pounds. At 260 pounds, Jones might be a quarterback in today’s game.

George Allen’s daughter, Jennifer, wrote and narrated the documentary. In an interview with Tom Hoffarth of the Los Angeles Daily News, she said:

“This project was the most fulfilling endeavor. I grew up respecting these men as both players and as men.  Deacon Jones is like a great uncle to me.  It was a pleasure to be able to talk with Susan Olsen and Phil Olsen, Merlin’s brother who played alongside him at the Rams.  And to meet Lamar’s son, Lamar III, brought me even closer to the heart of Lamar and his complete resilience to press on in the face of all physical adversity.

“I knew Merlin as a child and then again as adult, sitting beside him at dinner parties,” Allen said of Olsen, who died in 2010. “To meet Susan — his high school sweetheart — and his brother who bears such a deep resemblance to Merlin – as they walked me through his last visit home to Utah when he knew he was dying, was terribly moving, and poignant.”