Let's say that you are a supervisor who is faced with a potential sexual harassment situation. A female employee overheard three male employees telling and laughing at some very lewd jokes. She acknowledges that she was not in the room and that the men were not even aware that she was within earshot. She tells you that the jokes and language were very offensive to her, and as a result, is thinking about filing a "hostile work environment" complaint if you do not do something about their behavior. What would you do?