Which civilian company manufactured the iconic P-51 Mustang fighter aircraft during World War II, dramatically shifting from its pre-war consumer products to become one of America's largest military contractors?

Throughout history, certain civilian brands have made significant contributions to military equipment and supplies, creating unique products that later became collectibles. Some companies' wartime manufacturing pivoted dramatically from their peacetime goods, while others became legendary for their military contracts. This trivia question explores the fascinating intersection of commercial brand history and military supply during World War II.

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North American Aviation (later part of Boeing)
Ford Motor Company
General Electric
Singer Manufacturing Company (known for sewing machines)