Chester Goode (Dennis Weaver), who never carries a gun or rifle when Marshal Dillon is facing gunslingers, manages to shoot a passing Indian in the back in this episode.
Chester is on vacation to visit his cousin. He stops for a drink of water at a farm, and as soon as he sees Eddie Little Sky, he shoots him in the back. Sky was not even armed.
What makes this even more craven is that Chester always forgets his rifle when Matt Dillon is facing down bad guys. Chester will be standing meekly near Dillon, always unarmed. Just there to call Doc Adams when the gun-fighting is over.
Because Chester shot Little Sky in front of Callie (Jena Engstrom), who was trying to help Little Sky, she forces Chester to take Little Sky into the woods and tend to his gunshot.
Now the odds of anyone just healing up without medical attention are slim and none. Since this is fantasy, Chester takes out the bullet with a pocket knife, and makes it all better.
In spite of Callie fawning all over Little Sky, there is no interest from Little Sky. He also has no interest in befriending Chester. When Little Sky is well enough to ride a horse, he takes Chester's horse, saddle, and rifle, and rides like hell away from Chester.
The horse, saddle, and rifle represent everything Chester owns. The Indian only needed a horse. They usually rode without any saddles. He also did not need a rifle. Giving a rifle to an Indian who was a renegade off his reservation was a federal crime in those days.