Nathaniel Frey's first film.
Ray Walston's first film.
The aircraft carrier seen at the end of the film is the USS Boxer (CV 21). It wasn't commissioned until 16 April 1945 so it never saw service in World War II, but did see extensive service in the Korean War.
The fake response Cary Grant gives in the interview is from critic Walter Pater's "The Renaissance": "To burn always with this hard gem-like flame, to maintain this ecstasy, is success in life".