By the end of season 3, NBC executives still felt the show did not have enough female characters. On the orders of then-network president Warren Littlefield, new female characters had to be added to the cast or the show would face possible cancellation on its relegated Friday night time slot. Wolf realized that, since there were only six characters on the show, someone had to be dismissed. He chose to dismiss Florek and Brooks from the regular roster, and later said it was the hardest two phone calls he had ever made. Though producers initially claimed the firings, especially that of Brooks, who was said not to get along with Moriarty, were for other reasons, Wolf confirmed that the firings were on the orders of Littlefield.