I guess I'll have to watch it again but I don't think that line is in the movie. I recall it being said on the bridge of a ship, looking out over a vast armada of ships.
But, In Harm's way is about Operation Sky Hook and Kirk Dougals, after he rapes the nurse who is engaged to John Wayne's son, kills himself by taking a B-24 in search of the Japaneses fleet.
Maybe Im wrong but I can't find that line in that film.