Chairman of the Joint Chiefs of Staff U.S. Air Force Gen. Richard B. Myers receives a letter from Afghanistan President Karzi after he arrives at Khandahar, Afghanistan, on Aug. 19, 2005. Myers and USO celebrities are visiting American troops deployed around the world to increase morale and thank them for their service. Defense Dept. photo by U.S. Air Force Staff Sgt. D. Myles Cullen