DISCLAIMER: This writer does not own Gunsmoke, Walker Texas Ranger, or the song Big Iron by Marty Robbins. He only owns his own ideas and storyline.
Prelude
Sitting at CD's grill Walker, CD and Trivette were discussing the exploits of the old Texas Ranger, Wade Cooper. Trivette asked "What was the toughest case that Wade ever had?" Cordell thought for a moment and said "That would have to be "Texas Red, an outlaw who was only twenty-four years old, but who had already killed 20 men." CD said "but it wasn't Wade who took him out, it was an Arizona Ranger named Lonnie McDonald." Cordell responded and said "that's right. McDonald was an experienced Ranger and though Red had killed twenty men, he had never faced one who truly knew how to use a gun in a gun fight until he met Ranger McDonald; and that was his last mistake." Trivette said "so tell me about it." Then Cordell began the story…
Texas Ranger, Wade Cooper, pushed on through the cold rain as he left Texas and entered New Mexico in pursuit of a murderer known as Texas Red. Red had murdered a saloon keeper, in Decatur, Texas, after getting drunk and demanding more whiskey. The keeper told him that the house rules forbade him from serving him anymore. It was then that Red pulled his gun and shot the man without batting an eye. He then turned and stumbled out the door, got on his horse and left for his home in Agua Fria, Arizona.
Wade, a seasoned Texas Ranger had been on Red's trail now for 2 days and he wasn't about to allow a rainstorm to keep him from bringing this outlaw to justice.