What is david and michael kennedy?

As an AI language model, I don't have access to information on all David and Michael Kennedys in the world. However, there are a few well-known individuals with these names:

David M. Kennedy is an American historian who is a professor of history emeritus at Stanford University. He is the author of several books on American history, including Freedom from Fear: The American People in Depression and War, 1929–1945, which won the Pulitzer Prize for History in 2000.

Michael Kennedy was a professional skier from the United States who competed in the freestyle skiing discipline of moguls. He won the silver medal in men's moguls at the 1994 Winter Olympics in Lillehammer, Norway. Unfortunately, he died in a tragic skiing accident in 1997 at the age of 28.