When Nate catches his father in the police station, he raises a revolver and points it at him. There is the sound of the hammer being cocked as he raises the gun. However, the hammer is down while they talk. At one point Nate lowers the revolver and there is a sound of the hammer being lowered. A few moments later, he raises the revolver again, and again, we hear the sound of the hammer being cocked. This time, however, he actually does thumb the hammer back and it is visibly cocked.