In this incident, there are four recognized heroes, three of whom are lucky to be alive to explain their heroic behavior. Donald Arthur and Eugene Windsor are members of the park patrol helicopter. They risked their lives again and again to put the landing gear into the water to rescue the survivors. On TV, the two of them stood side by side and said that what they did was their duty. Kuhnigk, a 28-year-old employee of the Congressional Budget Office, said, "I never thought I would do this"-referring to the story of him jumping into the water and dragging an injured woman ashore, adding, "Someone has to jump into the water." This sentence has become the mantra of many heroes. Although nothing new, it is still admirable. In fact, no one has to go into the water, but some people do, which is why the haze of tragedy cannot be dispersed in people's hearts for a long time.