As Chairman of the Joint Chiefs of Staff, General Martin E. Dempsey is the top-ranking officer in the United States armed forces, the most powerful fighting machine the world has ever known. The Irish-American general married his high-school sweetheart, Deanie. They have three children, Chris, Megan and Caitlin. We even know the names of their sons- and daughter-in-law, as well as those of their grandchildren.