 The production team for this film assembled the largest herd of  Texas longhorns in nearly 30 years. It was also the last cattle  drive of its kind in history. Cast members such as Ernest Torrence,  Noah Beery and Jach Holt were recruited as night hawks to watch over  the cattle, for they were known for being fierce and temperamental,  and even the slightest rustle could send them into a panic.