U.S. Secretary of Defense Chuck Hagel, right, speaks with with senior military chiefs from the United Kingdom after presenting U.K. Chief of the Defense Staff Gen. Sir David Richards, center, with a Secretary of Defense medallion at the Combined Chiefs of Staff Committee hosted by Chairman of the Joint Chiefs of Staff U.S. Army Gen. Martin E. Dempsey at the National Defense University at Fort McNair in Washington, D.C., March 27, 2013. This was the first of meeting of its kind since 1948 and was called to discuss strategic challenges the U.K. and U.S. militaries may face in the future. (DoD photo by Glenn Fawcett/Released)