Other mistake: When McNulty uses the stopwatch to rob a bank, he goes through a small wooden door and past the employees. With time frozen, the small door should have stayed open but immediately swings shut.
Other mistake: An Army friend of Ben's uses Ponderosa land to test his hot-air balloon. There are very few clouds in the sky. A balloon in flight is shown but it is obviously stock footage. The sky is filled with clouds and the film contains several black spots and scratches.