Huge guns are designed and built in America.
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Titles read: "A BIGGER NAVY - Busy gun factories in United States".
United States of America.
M/S panning across a room where several important-looking men in suits sit, presumably in discussion about building bigger guns!
We then see various shots of men working on designs and models of guns to go on naval ships in a studio. In a factory we see the massive guns being manufactured.