Revealing mistake: When Steamboat Willie shoots a paratrooper running across the bridge who falls off and into the water in the middle right of the bridge you can see a crewmember's right arm in the shot.
Revealing mistake: When Mellish is stabbed, there's already a hole in his shirt before he's stabbed.
Revealing mistake: If you look at the river under the bridge and all other shoots it isn't flowing yet it is quite shallow. In one shot the wind is blowing the surface.The river was purpose built along with the town on former British Aerospace Factory in Hatfield Herts and the river is a shallow oblong mini lake the runs the width of the set.
Answer: Sniping needs stability - the movement of the waves under the boat would disrupt their aim so badly that they wouldn't have much hope of hitting anything.
Tailkinker ★