At around 1:15 after Webster shot the two guys and then walked the woman out of the room her hands were tied behind her back, but after going through the doorway and shot changes her hands are untied.
Ross's rank changes several times: Lt. on his office door; Lt. Col. in print; variably referred to as Lt. or Col. in the dialog.
Webster takes a rifle shot in the left shoulder with blood showing on his jacket. In the following scenes, there's no visible evidence of the shot in his movements, or in the sweater he's still wearing that should at least have a hole where the bullet entered, and perhaps one in the back for an exit wound to explain how little effect it had.
Lt Ross is wearing LTC rank on his sweater, while being called Lieutenant (LT) and his door being marked LT Ross.
The two men from the "gas company" inspecting the house enter the kitchen and open the oven on an electric range.