Which Hollywood celebrity served as a brand ambassador for General Dynamics in the 1950s, narrating promotional films about their military aircraft that substantially improved the company's public image during the Cold War?

Throughout history, military equipment manufacturers and defense contractors have occasionally enlisted celebrities as brand ambassadors to improve public perception. These partnerships have sometimes sparked controversy while reshaping marketing strategies in the defense industry. This trivia question explores one of the most surprising celebrity endorsements in military history that significantly impacted a company's brand positioning during the Cold War era.

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Jimmy Stewart (WWII bomber pilot who leveraged his military experience in promotional materials for the B-36 Peacemaker)
John Wayne (Though never serving in the military, he narrated films for McDonnell Douglas, not General Dynamics)
Ronald Reagan (While he did promotional work for General Electric, he never served as a brand ambassador for General Dynamics)
Charlton Heston (Though politically active, he primarily endorsed firearms manufacturers rather than aerospace defense contractors)