sentences:  Herndon lampooned him by saying that a national hero should be able to identify the national enemy, and asked him to call Madame Nhu, the "de facto" First Lady known for her anti-American comments, to get help in identifying the hostile country in question.After several reporters derisively laughed at these comments, Đính stormed out of the conference.Embarrassed by the events at the press conference, Đính returned to the officers' mess at the Joint General Staff headquarters.