He was portrayed by the late Jack Starrett.
Galt is one of the Chief Deputies of the town of Hope, Washington. Galt is even more brutal than the film's main antagonist, Will Teasle, and is the only person who dies in the entire movie. Galt is seen as a sadist who enjoys abusing his power to show people he doesn't like who's boss.
When Teasle arrests former Green Beret John Rambo, Galt is supposed to take care of Rambo and book him. Galt, who has a particular dislike for hippies and drifters, harasses Rambo by threatening to break his hand. Despite the disapproval from one of his other deputies, Galt quickly moves up to physical abuse by beating Rambo with his nightstick, "cleaning" Rambo with a high pressure fire hose, and preparing to shave him without any shaving cream. These acts of torture shatters Rambo's fragile mental state, and he fights his way out of the station and runs off into the forest. As Rambo runs off through the streets in a stolen motorcycle, Galt attempts to shoot him down with his rifle, but Teasle angrily stops him since there are too many citizens on the streets that could've been shot. Galt then decides to take his revenge for the humiliation by trying to kill Rambo with a sniper rifle from a helicopter, despite Teasle ordering him that they need Rambo alive. After spotting Rambo on a cliff, he fires repeatedly at him. The pilot angrily objects to this by saying that they are supposed to spot Rambo, not to kill him, but Galt threatens to kill the pilot if he doesn't hold the chopper steady.
Terrified for his life, Rambo is forced to throw a large rock at the helicopter. Because Galt unbuckled his safety belt to get a better shot, when the helicopter loses control, Galt tumbles out of the helicopter and falls screaming to his death into the rocky gorge a hundred feet below.