U.S. Army Gen. Martin E. Dempsey, right, the chairman of the Joint Chiefs of Staff, sings with young people who are being honored during the Military Child Education Coalition's 2014 National Training Seminar at the Washington Marriott Wardman Park in Washington, July 29, 2014. The coalition works with experts in child development, education and health to support children of military families. (DOD photo by Mass Communication Specialist 1st Class Daniel Hinton, U.S. Navy/Released)